[-next PATCH 0/4] sysfs and DEVICE_ATTR_<foo>

[-next PATCH 0/4] sysfs and DEVICE_ATTR_<foo>

[Joe Perches]

Joe Perches (4):
  sysfs.h: Use octal permissions
  treewide: Use DEVICE_ATTR_RW
  treewide: Use DEVICE_ATTR_RO
  treewide: Use DEVICE_ATTR_WO

 arch/arm/mach-pxa/sharpsl_pm.c                     |  4 +-
 arch/s390/kernel/smp.c                             |  2 +-
 arch/s390/kernel/topology.c                        |  3 +-
 arch/sh/drivers/push-switch.c                      |  2 +-
 arch/tile/kernel/sysfs.c                           | 12 ++--
 arch/x86/kernel/cpu/microcode/core.c               |  2 +-
 drivers/acpi/device_sysfs.c                        |  6 +-
 drivers/char/ipmi/ipmi_msghandler.c                | 17 +++---
 drivers/gpu/drm/i915/i915_sysfs.c                  | 12 ++--
 drivers/input/touchscreen/elants_i2c.c             |  2 +-
 drivers/net/ethernet/ibm/ibmvnic.c                 |  2 +-
 drivers/net/wimax/i2400m/sysfs.c                   |  3 +-
 drivers/nvme/host/core.c                           | 10 ++--
 drivers/platform/x86/compal-laptop.c               | 18 ++----
 drivers/s390/cio/css.c                             |  8 +--
 drivers/s390/cio/device.c                          | 10 ++--
 drivers/s390/crypto/ap_card.c                      |  2 +-
 drivers/scsi/hpsa.c                                | 10 ++--
 drivers/scsi/lpfc/lpfc_attr.c                      | 64 ++++++++--------------
 .../staging/media/atomisp/pci/atomisp2/hmm/hmm.c   |  8 +--
 drivers/thermal/thermal_sysfs.c                    | 17 +++---
 drivers/tty/serial/sh-sci.c                        |  2 +-
 drivers/usb/host/xhci-dbgcap.c                     |  2 +-
 drivers/usb/phy/phy-tahvo.c                        |  2 +-
 drivers/video/fbdev/auo_k190x.c                    |  4 +-
 drivers/video/fbdev/w100fb.c                       |  4 +-
 include/linux/sysfs.h                              | 14 ++---
 lib/test_firmware.c                                | 14 ++---
 lib/test_kmod.c                                    | 14 ++---
 sound/soc/omap/mcbsp.c                             |  4 +-
 sound/soc/soc-core.c                               |  2 +-
 sound/soc/soc-dapm.c                               |  2 +-
 32 files changed, 120 insertions(+), 158 deletions(-)

-- 
2.15.0

_______________________________________________
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dri-devel@lists.freedesktop.org
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[-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Joe Perches]

Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.

Done with perl script:

$ git grep -w --name-only DEVICE_ATTR | \
  xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S_IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*\1_show\s*,\s*\1_store\s*\)/DEVICE_ATTR_RW(\1)/g; print;}'

Signed-off-by: Joe Perches <joe@perches.com>
---
 arch/s390/kernel/topology.c          |  3 +--
 arch/tile/kernel/sysfs.c             |  2 +-
 drivers/gpu/drm/i915/i915_sysfs.c    |  6 ++---
 drivers/platform/x86/compal-laptop.c | 18 +++++----------
 drivers/s390/cio/device.c            |  2 +-
 drivers/scsi/lpfc/lpfc_attr.c        | 43 ++++++++++++------------------------
 drivers/thermal/thermal_sysfs.c      |  9 ++++----
 drivers/tty/serial/sh-sci.c          |  2 +-
 drivers/usb/host/xhci-dbgcap.c       |  2 +-
 drivers/usb/phy/phy-tahvo.c          |  2 +-
 drivers/video/fbdev/auo_k190x.c      |  4 ++--
 drivers/video/fbdev/w100fb.c         |  4 ++--
 lib/test_firmware.c                  | 14 +++++-------
 lib/test_kmod.c                      | 14 +++++-------
 sound/soc/omap/mcbsp.c               |  4 ++--
 15 files changed, 49 insertions(+), 80 deletions(-)

diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 4d5b65e527b5..4b6e0397f66d 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -404,8 +404,7 @@ static ssize_t dispatching_store(struct device *dev,
 	put_online_cpus();
 	return rc ? rc : count;
 }
-static DEVICE_ATTR(dispatching, 0644, dispatching_show,
-			 dispatching_store);
+static DEVICE_ATTR_RW(dispatching);
 
 static ssize_t cpu_polarization_show(struct device *dev,
 				     struct device_attribute *attr, char *buf)
diff --git a/arch/tile/kernel/sysfs.c b/arch/tile/kernel/sysfs.c
index 825867c53853..af5024f0fb5a 100644
--- a/arch/tile/kernel/sysfs.c
+++ b/arch/tile/kernel/sysfs.c
@@ -184,7 +184,7 @@ static ssize_t hv_stats_store(struct device *dev,
 	return n < 0 ? n : count;
 }
 
-static DEVICE_ATTR(hv_stats, 0644, hv_stats_show, hv_stats_store);
+static DEVICE_ATTR_RW(hv_stats);
 
 static int hv_stats_device_add(struct device *dev, struct subsys_interface *sif)
 {
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index c74a20b80182..1d0ab8ff5915 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -447,9 +447,9 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
 
 static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL);
 static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL);
-static DEVICE_ATTR(gt_boost_freq_mhz, S_IRUGO | S_IWUSR, gt_boost_freq_mhz_show, gt_boost_freq_mhz_store);
-static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store);
-static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store);
+static DEVICE_ATTR_RW(gt_boost_freq_mhz);
+static DEVICE_ATTR_RW(gt_max_freq_mhz);
+static DEVICE_ATTR_RW(gt_min_freq_mhz);
 
 static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show, NULL);
 
diff --git a/drivers/platform/x86/compal-laptop.c b/drivers/platform/x86/compal-laptop.c
index 6bcb750e1865..4f9bc72f0584 100644
--- a/drivers/platform/x86/compal-laptop.c
+++ b/drivers/platform/x86/compal-laptop.c
@@ -679,18 +679,12 @@ static int bat_writeable_property(struct power_supply *psy,
 /* ============== */
 /* Driver Globals */
 /* ============== */
-static DEVICE_ATTR(wake_up_pme,
-		0644, wake_up_pme_show,		wake_up_pme_store);
-static DEVICE_ATTR(wake_up_modem,
-		0644, wake_up_modem_show,	wake_up_modem_store);
-static DEVICE_ATTR(wake_up_lan,
-		0644, wake_up_lan_show,	wake_up_lan_store);
-static DEVICE_ATTR(wake_up_wlan,
-		0644, wake_up_wlan_show,	wake_up_wlan_store);
-static DEVICE_ATTR(wake_up_key,
-		0644, wake_up_key_show,	wake_up_key_store);
-static DEVICE_ATTR(wake_up_mouse,
-		0644, wake_up_mouse_show,	wake_up_mouse_store);
+static DEVICE_ATTR_RW(wake_up_pme);
+static DEVICE_ATTR_RW(wake_up_modem);
+static DEVICE_ATTR_RW(wake_up_lan);
+static DEVICE_ATTR_RW(wake_up_wlan);
+static DEVICE_ATTR_RW(wake_up_key);
+static DEVICE_ATTR_RW(wake_up_mouse);
 
 static DEVICE_ATTR(fan1_input,  S_IRUGO, fan_show,          NULL);
 static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu,          NULL);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 75a245f38e2e..6eefb67b31f3 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -600,7 +600,7 @@ static ssize_t vpm_show(struct device *dev, struct device_attribute *attr,
 static DEVICE_ATTR(devtype, 0444, devtype_show, NULL);
 static DEVICE_ATTR(cutype, 0444, cutype_show, NULL);
 static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
-static DEVICE_ATTR(online, 0644, online_show, online_store);
+static DEVICE_ATTR_RW(online);
 static DEVICE_ATTR(availability, 0444, available_show, NULL);
 static DEVICE_ATTR(logging, 0200, NULL, initiate_logging);
 static DEVICE_ATTR(vpm, 0444, vpm_show, NULL);
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 797bb42a6306..95f7ba3c3f1a 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -2519,8 +2519,7 @@ lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
 				"reinit adapter - %d\n", stat2);
 	return (stat1 || stat2) ? -EIO : count;
 }
-static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,
-		   lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
+static DEVICE_ATTR_RW(lpfc_soft_wwpn);
 
 /**
  * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
@@ -2583,8 +2582,7 @@ lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
 
 	return count;
 }
-static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,
-		   lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
+static DEVICE_ATTR_RW(lpfc_soft_wwnn);
 
 /**
  * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
@@ -3102,8 +3100,7 @@ MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
 		 " 1 - poll with interrupts enabled"
 		 " 3 - poll and disable FCP ring interrupts");
 
-static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
-		   lpfc_poll_show, lpfc_poll_store);
+static DEVICE_ATTR_RW(lpfc_poll);
 
 int lpfc_no_hba_reset_cnt;
 unsigned long lpfc_no_hba_reset[MAX_HBAS_NO_RESET] = {
@@ -3336,8 +3333,7 @@ lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
 
 lpfc_vport_param_store(nodev_tmo)
 
-static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
-		   lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
+static DEVICE_ATTR_RW(lpfc_nodev_tmo);
 
 /*
 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
@@ -3386,8 +3382,7 @@ lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
 }
 
 lpfc_vport_param_store(devloss_tmo)
-static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
-		   lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
+static DEVICE_ATTR_RW(lpfc_devloss_tmo);
 
 /*
  * lpfc_suppress_rsp: Enable suppress rsp feature is firmware supports it
@@ -3580,8 +3575,7 @@ lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
 	return 0;
 }
 lpfc_vport_param_store(restrict_login);
-static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR,
-		   lpfc_restrict_login_show, lpfc_restrict_login_store);
+static DEVICE_ATTR_RW(lpfc_restrict_login);
 
 /*
 # Some disk devices have a "select ID" or "select Target" capability.
@@ -3695,8 +3689,7 @@ lpfc_topology_store(struct device *dev, struct device_attribute *attr,
 }
 
 lpfc_param_show(topology)
-static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
-		lpfc_topology_show, lpfc_topology_store);
+static DEVICE_ATTR_RW(lpfc_topology);
 
 /**
  * lpfc_static_vport_show: Read callback function for
@@ -3954,8 +3947,7 @@ lpfc_stat_data_ctrl_show(struct device *dev, struct device_attribute *attr,
 /*
  * Sysfs attribute to control the statistical data collection.
  */
-static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR,
-		   lpfc_stat_data_ctrl_show, lpfc_stat_data_ctrl_store);
+static DEVICE_ATTR_RW(lpfc_stat_data_ctrl);
 
 /*
  * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
@@ -4194,8 +4186,7 @@ lpfc_link_speed_init(struct lpfc_hba *phba, int val)
 	return -EINVAL;
 }
 
-static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
-		   lpfc_link_speed_show, lpfc_link_speed_store);
+static DEVICE_ATTR_RW(lpfc_link_speed);
 
 /*
 # lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER)
@@ -4288,8 +4279,7 @@ lpfc_aer_support_store(struct device *dev, struct device_attribute *attr,
 	return rc;
 }
 
-static DEVICE_ATTR(lpfc_aer_support, S_IRUGO | S_IWUSR,
-		   lpfc_aer_support_show, lpfc_aer_support_store);
+static DEVICE_ATTR_RW(lpfc_aer_support);
 
 /**
  * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device
@@ -4436,8 +4426,7 @@ LPFC_ATTR(sriov_nr_virtfn, LPFC_DEF_VFN_PER_PFN, 0, LPFC_MAX_VFN_PER_PFN,
 	"Enable PCIe device SR-IOV virtual fn");
 
 lpfc_param_show(sriov_nr_virtfn)
-static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR,
-		   lpfc_sriov_nr_virtfn_show, lpfc_sriov_nr_virtfn_store);
+static DEVICE_ATTR_RW(lpfc_sriov_nr_virtfn);
 
 /**
  * lpfc_request_firmware_store - Request for Linux generic firmware upgrade
@@ -4611,8 +4600,7 @@ lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
 	return 0;
 }
 
-static DEVICE_ATTR(lpfc_fcp_imax, S_IRUGO | S_IWUSR,
-		   lpfc_fcp_imax_show, lpfc_fcp_imax_store);
+static DEVICE_ATTR_RW(lpfc_fcp_imax);
 
 /*
  * lpfc_auto_imax: Controls Auto-interrupt coalescing values support.
@@ -4772,8 +4760,7 @@ lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val)
 	return 0;
 }
 
-static DEVICE_ATTR(lpfc_fcp_cpu_map, S_IRUGO | S_IWUSR,
-		   lpfc_fcp_cpu_map_show, lpfc_fcp_cpu_map_store);
+static DEVICE_ATTR_RW(lpfc_fcp_cpu_map);
 
 /*
 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
@@ -4859,9 +4846,7 @@ lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val)
 	return 0;
 }
 lpfc_vport_param_store(max_scsicmpl_time);
-static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR,
-		   lpfc_max_scsicmpl_time_show,
-		   lpfc_max_scsicmpl_time_store);
+static DEVICE_ATTR_RW(lpfc_max_scsicmpl_time);
 
 /*
 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index fb80c96d8f73..c008af7fb480 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -398,14 +398,13 @@ create_s32_tzp_attr(offset);
  */
 static DEVICE_ATTR(type, 0444, type_show, NULL);
 static DEVICE_ATTR(temp, 0444, temp_show, NULL);
-static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
+static DEVICE_ATTR_RW(policy);
 static DEVICE_ATTR(available_policies, S_IRUGO, available_policies_show, NULL);
-static DEVICE_ATTR(sustainable_power, S_IWUSR | S_IRUGO, sustainable_power_show,
-		   sustainable_power_store);
+static DEVICE_ATTR_RW(sustainable_power);
 
 /* These thermal zone device attributes are created based on conditions */
-static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
-static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
+static DEVICE_ATTR_RW(mode);
+static DEVICE_ATTR_RW(passive);
 
 /* These attributes are unconditionally added to a thermal zone */
 static struct attribute *thermal_zone_dev_attrs[] = {
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index d9f399c4e90c..7257c078e155 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1144,7 +1144,7 @@ static ssize_t rx_fifo_timeout_store(struct device *dev,
 	return count;
 }
 
-static DEVICE_ATTR(rx_fifo_timeout, 0644, rx_fifo_timeout_show, rx_fifo_timeout_store);
+static DEVICE_ATTR_RW(rx_fifo_timeout);
 
 
 #ifdef CONFIG_SERIAL_SH_SCI_DMA
diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c
index 452df0f87d6e..a1ab8acf39ba 100644
--- a/drivers/usb/host/xhci-dbgcap.c
+++ b/drivers/usb/host/xhci-dbgcap.c
@@ -920,7 +920,7 @@ static ssize_t dbc_store(struct device *dev,
 	return count;
 }
 
-static DEVICE_ATTR(dbc, 0644, dbc_show, dbc_store);
+static DEVICE_ATTR_RW(dbc);
 
 int xhci_dbc_init(struct xhci_hcd *xhci)
 {
diff --git a/drivers/usb/phy/phy-tahvo.c b/drivers/usb/phy/phy-tahvo.c
index b3ce42edb373..7f7c5c82420d 100644
--- a/drivers/usb/phy/phy-tahvo.c
+++ b/drivers/usb/phy/phy-tahvo.c
@@ -310,7 +310,7 @@ static ssize_t otg_mode_store(struct device *device,
 
 	return r;
 }
-static DEVICE_ATTR(otg_mode, 0644, otg_mode_show, otg_mode_store);
+static DEVICE_ATTR_RW(otg_mode);
 
 static struct attribute *tahvo_attributes[] = {
 	&dev_attr_vbus.attr,
diff --git a/drivers/video/fbdev/auo_k190x.c b/drivers/video/fbdev/auo_k190x.c
index 0d06038324e0..1e383c547633 100644
--- a/drivers/video/fbdev/auo_k190x.c
+++ b/drivers/video/fbdev/auo_k190x.c
@@ -708,8 +708,8 @@ static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
 	return sprintf(buf, "%d\n", temp);
 }
 
-static DEVICE_ATTR(update_mode, 0644, update_mode_show, update_mode_store);
-static DEVICE_ATTR(flash, 0644, flash_show, flash_store);
+static DEVICE_ATTR_RW(update_mode);
+static DEVICE_ATTR_RW(flash);
 static DEVICE_ATTR(temp, 0644, temp_show, NULL);
 
 static struct attribute *auok190x_attributes[] = {
diff --git a/drivers/video/fbdev/w100fb.c b/drivers/video/fbdev/w100fb.c
index d570e19a2864..035ff6e02894 100644
--- a/drivers/video/fbdev/w100fb.c
+++ b/drivers/video/fbdev/w100fb.c
@@ -110,7 +110,7 @@ static ssize_t flip_store(struct device *dev, struct device_attribute *attr, con
 	return count;
 }
 
-static DEVICE_ATTR(flip, 0644, flip_show, flip_store);
+static DEVICE_ATTR_RW(flip);
 
 static ssize_t w100fb_reg_read(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
@@ -166,7 +166,7 @@ static ssize_t fastpllclk_store(struct device *dev, struct device_attribute *att
 	return count;
 }
 
-static DEVICE_ATTR(fastpllclk, 0644, fastpllclk_show, fastpllclk_store);
+static DEVICE_ATTR_RW(fastpllclk);
 
 /*
  * Some touchscreens need hsync information from the video driver to
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 64a4c76cba2b..964784dc1602 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -359,7 +359,7 @@ static ssize_t config_name_show(struct device *dev,
 {
 	return config_test_show_str(buf, test_fw_config->name);
 }
-static DEVICE_ATTR(config_name, 0644, config_name_show, config_name_store);
+static DEVICE_ATTR_RW(config_name);
 
 static ssize_t config_num_requests_store(struct device *dev,
 					 struct device_attribute *attr,
@@ -388,8 +388,7 @@ static ssize_t config_num_requests_show(struct device *dev,
 {
 	return test_dev_config_show_u8(buf, test_fw_config->num_requests);
 }
-static DEVICE_ATTR(config_num_requests, 0644, config_num_requests_show,
-		   config_num_requests_store);
+static DEVICE_ATTR_RW(config_num_requests);
 
 static ssize_t config_sync_direct_store(struct device *dev,
 					struct device_attribute *attr,
@@ -411,8 +410,7 @@ static ssize_t config_sync_direct_show(struct device *dev,
 {
 	return test_dev_config_show_bool(buf, test_fw_config->sync_direct);
 }
-static DEVICE_ATTR(config_sync_direct, 0644, config_sync_direct_show,
-		   config_sync_direct_store);
+static DEVICE_ATTR_RW(config_sync_direct);
 
 static ssize_t config_send_uevent_store(struct device *dev,
 					struct device_attribute *attr,
@@ -428,8 +426,7 @@ static ssize_t config_send_uevent_show(struct device *dev,
 {
 	return test_dev_config_show_bool(buf, test_fw_config->send_uevent);
 }
-static DEVICE_ATTR(config_send_uevent, 0644, config_send_uevent_show,
-		   config_send_uevent_store);
+static DEVICE_ATTR_RW(config_send_uevent);
 
 static ssize_t config_read_fw_idx_store(struct device *dev,
 					struct device_attribute *attr,
@@ -445,8 +442,7 @@ static ssize_t config_read_fw_idx_show(struct device *dev,
 {
 	return test_dev_config_show_u8(buf, test_fw_config->read_fw_idx);
 }
-static DEVICE_ATTR(config_read_fw_idx, 0644, config_read_fw_idx_show,
-		   config_read_fw_idx_store);
+static DEVICE_ATTR_RW(config_read_fw_idx);
 
 
 static ssize_t trigger_request_store(struct device *dev,
diff --git a/lib/test_kmod.c b/lib/test_kmod.c
index 337f408b4de6..e372b97eee13 100644
--- a/lib/test_kmod.c
+++ b/lib/test_kmod.c
@@ -694,8 +694,7 @@ static ssize_t config_test_driver_show(struct device *dev,
 	return config_test_show_str(&test_dev->config_mutex, buf,
 				    config->test_driver);
 }
-static DEVICE_ATTR(config_test_driver, 0644, config_test_driver_show,
-		   config_test_driver_store);
+static DEVICE_ATTR_RW(config_test_driver);
 
 static ssize_t config_test_fs_store(struct device *dev,
 				    struct device_attribute *attr,
@@ -726,8 +725,7 @@ static ssize_t config_test_fs_show(struct device *dev,
 	return config_test_show_str(&test_dev->config_mutex, buf,
 				    config->test_fs);
 }
-static DEVICE_ATTR(config_test_fs, 0644, config_test_fs_show,
-		   config_test_fs_store);
+static DEVICE_ATTR_RW(config_test_fs);
 
 static int trigger_config_run_type(struct kmod_test_device *test_dev,
 				   enum kmod_test_case test_case,
@@ -1012,8 +1010,7 @@ static ssize_t config_num_threads_show(struct device *dev,
 
 	return test_dev_config_show_int(test_dev, buf, config->num_threads);
 }
-static DEVICE_ATTR(config_num_threads, 0644, config_num_threads_show,
-		   config_num_threads_store);
+static DEVICE_ATTR_RW(config_num_threads);
 
 static ssize_t config_test_case_store(struct device *dev,
 				      struct device_attribute *attr,
@@ -1037,8 +1034,7 @@ static ssize_t config_test_case_show(struct device *dev,
 
 	return test_dev_config_show_uint(test_dev, buf, config->test_case);
 }
-static DEVICE_ATTR(config_test_case, 0644, config_test_case_show,
-		   config_test_case_store);
+static DEVICE_ATTR_RW(config_test_case);
 
 static ssize_t test_result_show(struct device *dev,
 				struct device_attribute *attr,
@@ -1049,7 +1045,7 @@ static ssize_t test_result_show(struct device *dev,
 
 	return test_dev_config_show_int(test_dev, buf, config->test_result);
 }
-static DEVICE_ATTR(test_result, 0644, test_result_show, test_result_store);
+static DEVICE_ATTR_RW(test_result);
 
 #define TEST_KMOD_DEV_ATTR(name)		&dev_attr_##name.attr
 
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
index 7a54e3083203..79d4dc785e5c 100644
--- a/sound/soc/omap/mcbsp.c
+++ b/sound/soc/omap/mcbsp.c
@@ -854,7 +854,7 @@ static ssize_t dma_op_mode_store(struct device *dev,
 	return size;
 }
 
-static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
+static DEVICE_ATTR_RW(dma_op_mode);
 
 static const struct attribute *additional_attrs[] = {
 	&dev_attr_max_tx_thres.attr,
@@ -923,7 +923,7 @@ static ssize_t st_taps_store(struct device *dev,
 	return size;
 }
 
-static DEVICE_ATTR(st_taps, 0644, st_taps_show, st_taps_store);
+static DEVICE_ATTR_RW(st_taps);
 
 static const struct attribute *sidetone_attrs[] = {
 	&dev_attr_st_taps.attr,
-- 
2.15.0

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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Andy Shevchenko]

On Tue, Dec 19, 2017 at 8:15 PM, Joe Perches <joe@perches.com> wrote:
> Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
>
> Done with perl script:
>
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S_IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*\1_show\s*,\s*\1_store\s*\)/DEVICE_ATTR_RW(\1)/g; print;}'

>  drivers/platform/x86/compal-laptop.c | 18 +++++----------

> --- a/drivers/platform/x86/compal-laptop.c
> +++ b/drivers/platform/x86/compal-laptop.c
> @@ -679,18 +679,12 @@ static int bat_writeable_property(struct power_supply *psy,
>  /* ============== */
>  /* Driver Globals */
>  /* ============== */
> -static DEVICE_ATTR(wake_up_pme,
> -               0644, wake_up_pme_show,         wake_up_pme_store);
> -static DEVICE_ATTR(wake_up_modem,
> -               0644, wake_up_modem_show,       wake_up_modem_store);
> -static DEVICE_ATTR(wake_up_lan,
> -               0644, wake_up_lan_show, wake_up_lan_store);
> -static DEVICE_ATTR(wake_up_wlan,
> -               0644, wake_up_wlan_show,        wake_up_wlan_store);
> -static DEVICE_ATTR(wake_up_key,
> -               0644, wake_up_key_show, wake_up_key_store);
> -static DEVICE_ATTR(wake_up_mouse,
> -               0644, wake_up_mouse_show,       wake_up_mouse_store);
> +static DEVICE_ATTR_RW(wake_up_pme);
> +static DEVICE_ATTR_RW(wake_up_modem);
> +static DEVICE_ATTR_RW(wake_up_lan);
> +static DEVICE_ATTR_RW(wake_up_wlan);
> +static DEVICE_ATTR_RW(wake_up_key);
> +static DEVICE_ATTR_RW(wake_up_mouse);

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>

for PDx86 bits.

Have to say that while it doesn't change the attributes here, it might
require still to be revisited by security people, if they wish.

-- 
With Best Regards,
Andy Shevchenko
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Re: [alsa-devel] [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Jidong Zhang]

Does anyone know how to use Conexant CX20921 to develop our own application. I cannot find anywhere to download the software and manuals.

Thanks to all
J.D

-----Original Message-----
From: alsa-devel-bounces@alsa-project.org [mailto:alsa-devel-bounces@alsa-project.org] On Behalf Of Andy Shevchenko
Sent: 2017年12月20日 2:42
To: Joe Perches <joe@perches.com>
Cc: linux-fbdev@vger.kernel.org; David Airlie <airlied@linux.ie>; Joonas Lahtinen <joonas.lahtinen@linux.intel.com>; Heiko Carstens <heiko.carstens@de.ibm.com>; ALSA Development Mailing List <alsa-devel@alsa-project.org>; dri-devel@lists.freedesktop.org; Peter Ujfalusi <peter.ujfalusi@ti.com>; linux-s390@vger.kernel.org; Linux OMAP Mailing List <linux-omap@vger.kernel.org>; James E.J. Bottomley <jejb@linux.vnet.ibm.com>; linux-scsi <linux-scsi@vger.kernel.org>; Takashi Iwai <tiwai@suse.com>; Sebastian Ott <sebott@linux.vnet.ibm.com>; James Smart <james.smart@broadcom.com>; Cezary Jackiewicz <cezary.jackiewicz@gmail.com>; linux-serial@vger.kernel.org; Jiri Slaby <jslaby@suse.com>; Darren Hart <dvhart@infradead.org>; Zhang Rui <rui.zhang@intel.com>; Dick Kennedy <dick.kennedy@broadcom.com>; Mathias Nyman <mathias.nyman@intel.com>; Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>; Peter Oberparleiter <oberpar@linux.vnet.ibm.com>; intel-gfx@lists.freedesktop.org; Jani Nikula <jani.nikula@linux.intel.com>; Eduardo Valentin <edubezval@gmail.com>; Mark Brown <broonie@kernel.org>; Rodrigo Vivi <rodrigo.vivi@intel.com>; Platform Driver <platform-driver-x86@vger.kernel.org>; Felipe Balbi <balbi@kernel.org>; Martin K. Petersen <martin.petersen@oracle.com>; Greg Kroah-Hartman <gregkh@linuxfoundation.org>; linux-pm@vger.kernel.org; USB <linux-usb@vger.kernel.org>; Liam Girdwood <lgirdwood@gmail.com>; linux-kernel@vger.kernel.org; Luis R. Rodriguez <mcgrof@kernel.org>; Andy Shevchenko <andy@infradead.org>; Martin Schwidefsky <schwidefsky@de.ibm.com>; Jarkko Nikula <jarkko.nikula@bitmer.com>
Subject: Re: [alsa-devel] [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

On Tue, Dec 19, 2017 at 8:15 PM, Joe Perches <joe@perches.com> wrote:
> Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
>
> Done with perl script:
>
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S_IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*\1_show\s*,\s*\1_store\s*\)/DEVICE_ATTR_RW(\1)/g; print;}'

>  drivers/platform/x86/compal-laptop.c | 18 +++++----------

> --- a/drivers/platform/x86/compal-laptop.c
> +++ b/drivers/platform/x86/compal-laptop.c
> @@ -679,18 +679,12 @@ static int bat_writeable_property(struct 
> power_supply *psy,
>  /* ============== */
>  /* Driver Globals */
>  /* ============== */
> -static DEVICE_ATTR(wake_up_pme,
> -               0644, wake_up_pme_show,         wake_up_pme_store);
> -static DEVICE_ATTR(wake_up_modem,
> -               0644, wake_up_modem_show,       wake_up_modem_store);
> -static DEVICE_ATTR(wake_up_lan,
> -               0644, wake_up_lan_show, wake_up_lan_store);
> -static DEVICE_ATTR(wake_up_wlan,
> -               0644, wake_up_wlan_show,        wake_up_wlan_store);
> -static DEVICE_ATTR(wake_up_key,
> -               0644, wake_up_key_show, wake_up_key_store);
> -static DEVICE_ATTR(wake_up_mouse,
> -               0644, wake_up_mouse_show,       wake_up_mouse_store);
> +static DEVICE_ATTR_RW(wake_up_pme);
> +static DEVICE_ATTR_RW(wake_up_modem); static 
> +DEVICE_ATTR_RW(wake_up_lan); static DEVICE_ATTR_RW(wake_up_wlan); 
> +static DEVICE_ATTR_RW(wake_up_key); static 
> +DEVICE_ATTR_RW(wake_up_mouse);

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>

for PDx86 bits.

Have to say that while it doesn't change the attributes here, it might require still to be revisited by security people, if they wish.

--
With Best Regards,
Andy Shevchenko
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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Joe Perches]

On Wed, 2017-12-20 at 10:34 +0200, Jarkko Nikula wrote:
> On Tue, Dec 19, 2017 at 10:15:07AM -0800, Joe Perches wrote:
> > Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
[] 
> > diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
[]
> > @@ -854,7 +854,7 @@ static ssize_t dma_op_mode_store(struct device *dev,
> >  	return size;
> >  }
> >  
> > -static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
> > +static DEVICE_ATTR_RW(dma_op_mode);
> >  
> 
> While I can ack this part here if it helps generic cleanup effort I
> don't understart would it improve code readability in general? Mode 644
> is clear and don't need any grepping but for DEVICE_ATTR_RW() I had to go
> through all of these files in order to see what does it mean:

Are you suggesting that device.h (as that is where
DEVICE_ATTR and the other DEVICE_ATTR_<FOO> variants
are #defined) should have better comments for the
_<FOO> variants?

> DEVICE_ATTR_RW: include/linux/device.h
> __ATTR_RW: include/linux/sysfs.h
> S_IWUSR: include/uapi/linux/stat.h
> S_IRUGO: include/linux/stat.h

btw: patch 1/4 of the series does remove the uses of
S_<PERMS> from these macros in sysfs.h and converts
them to simple octal instead.

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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Joe Perches]

On Wed, 2017-12-20 at 10:32 +0100, Greg Kroah-Hartman wrote:
> On Wed, Dec 20, 2017 at 01:24:44AM -0800, Joe Perches wrote:
> > On Wed, 2017-12-20 at 10:34 +0200, Jarkko Nikula wrote:
> > > On Tue, Dec 19, 2017 at 10:15:07AM -0800, Joe Perches wrote:
> > > > Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
> > 
> > [] 
> > > > diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
> > 
> > []
> > > > @@ -854,7 +854,7 @@ static ssize_t dma_op_mode_store(struct device *dev,
> > > >  	return size;
> > > >  }
> > > >  
> > > > -static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
> > > > +static DEVICE_ATTR_RW(dma_op_mode);
> > > >  
> > > 
> > > While I can ack this part here if it helps generic cleanup effort I
> > > don't understart would it improve code readability in general? Mode 644
> > > is clear and don't need any grepping but for DEVICE_ATTR_RW() I had to go
> > > through all of these files in order to see what does it mean:
> 
> Yeah, 644 is "clear", but _RW() is even more clear.  Ideally I want to
> get rid of all of the "non-standard" users that set random modes of
> sysfs files, as we get it wrong too many times.  Using the "defaults" is
> much better.
> 
> > Are you suggesting that device.h (as that is where
> > DEVICE_ATTR and the other DEVICE_ATTR_<FOO> variants
> > are #defined) should have better comments for the
> > _<FOO> variants?
> > 
> > > DEVICE_ATTR_RW: include/linux/device.h
> > > __ATTR_RW: include/linux/sysfs.h
> > > S_IWUSR: include/uapi/linux/stat.h
> > > S_IRUGO: include/linux/stat.h
> > 
> > btw: patch 1/4 of the series does remove the uses of
> > S_<PERMS> from these macros in sysfs.h and converts
> > them to simple octal instead.
> 
> Why you didn't send that patch to the sysfs maintainer is a bit odd...  :)

So here's an opportunity for you:

The sysfs maintainer hasn't added include/linux/sysfs.h to
the list of maintained files...

DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
M:	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
S:	Supported
F:	Documentation/kobject.txt
F:	drivers/base/
F:	fs/debugfs/
F:	fs/sysfs/
F:	include/linux/debugfs.h
F:	include/linux/kobj*
F:	lib/kobj*

> I should be taking this whole series through my tree.  Joe, thanks for
> doing this in an automated way, I've been wanting to see this done for a
> long time.

btw: there are many uses of a reversed declaration style of DEVICE_ATTR

Here's another thing that could be done for more DEVICE_ATTR_<FOO> uses.

===

Some DEVICE_ATTR definitions use a reversed static function form from
the typical.  Convert them to use the more common macro form so it is
easier to grep for the style.

i.e.:
        static ssize_t show_<foo>(...)
and
        static ssize_t store_<foo>(...)

where the static function names in the DEVICE_ATTR_RW macro are reversed

        static ssize_t <foo>_show(...)
and
        static ssize_t <foo>_store(...)

Done with perl script

$ cat dev_attr_rw_backwards.perl
local $/;
while (<>) {
    my $file = $_;
    while ($file =~ m/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,/g) {
        my $var = $1;
        if ($file =~ s/\bDEVICE_ATTR\s*\(\s*${var}\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S
            $file =~ s/\bshow_${var}\b/${var}_show/g;
            $file =~ s/\bstore_${var}\b/${var}_store/g;
        }
    }
    print $file;
}

$ git grep --name-only -w DEVICE_ATTR | \
  xargs perl -i dev_attr_rw_backwards.perl


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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Greg Kroah-Hartman]

On Wed, Dec 20, 2017 at 01:54:41AM -0800, Joe Perches wrote:
> On Wed, 2017-12-20 at 10:32 +0100, Greg Kroah-Hartman wrote:
> > On Wed, Dec 20, 2017 at 01:24:44AM -0800, Joe Perches wrote:
> > > On Wed, 2017-12-20 at 10:34 +0200, Jarkko Nikula wrote:
> > > > On Tue, Dec 19, 2017 at 10:15:07AM -0800, Joe Perches wrote:
> > > > > Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
> > > 
> > > [] 
> > > > > diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
> > > 
> > > []
> > > > > @@ -854,7 +854,7 @@ static ssize_t dma_op_mode_store(struct device *dev,
> > > > >  	return size;
> > > > >  }
> > > > >  
> > > > > -static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
> > > > > +static DEVICE_ATTR_RW(dma_op_mode);
> > > > >  
> > > > 
> > > > While I can ack this part here if it helps generic cleanup effort I
> > > > don't understart would it improve code readability in general? Mode 644
> > > > is clear and don't need any grepping but for DEVICE_ATTR_RW() I had to go
> > > > through all of these files in order to see what does it mean:
> > 
> > Yeah, 644 is "clear", but _RW() is even more clear.  Ideally I want to
> > get rid of all of the "non-standard" users that set random modes of
> > sysfs files, as we get it wrong too many times.  Using the "defaults" is
> > much better.
> > 
> > > Are you suggesting that device.h (as that is where
> > > DEVICE_ATTR and the other DEVICE_ATTR_<FOO> variants
> > > are #defined) should have better comments for the
> > > _<FOO> variants?
> > > 
> > > > DEVICE_ATTR_RW: include/linux/device.h
> > > > __ATTR_RW: include/linux/sysfs.h
> > > > S_IWUSR: include/uapi/linux/stat.h
> > > > S_IRUGO: include/linux/stat.h
> > > 
> > > btw: patch 1/4 of the series does remove the uses of
> > > S_<PERMS> from these macros in sysfs.h and converts
> > > them to simple octal instead.
> > 
> > Why you didn't send that patch to the sysfs maintainer is a bit odd...  :)
> 
> So here's an opportunity for you:
> 
> The sysfs maintainer hasn't added include/linux/sysfs.h to
> the list of maintained files...
> 
> DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
> M:	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
> S:	Supported
> F:	Documentation/kobject.txt
> F:	drivers/base/
> F:	fs/debugfs/
> F:	fs/sysfs/
> F:	include/linux/debugfs.h
> F:	include/linux/kobj*
> F:	lib/kobj*

Heh, good point, but using get_maintainer.pl does put me at the top of
the list that you should be cc:ing:

$ ./scripts/get_maintainer.pl --file include/linux/sysfs.h
Greg Kroah-Hartman <gregkh@linuxfoundation.org> (commit_signer:3/3=100%,authored:2/3=67%,added_lines:7/8=88%)
Kate Stewart <kstewart@linuxfoundation.org> (commit_signer:1/3=33%)
Thomas Gleixner <tglx@linutronix.de> (commit_signer:1/3=33%)
Philippe Ombredanne <pombredanne@nexb.com> (commit_signer:1/3=33%)
Nick Desaulniers <nick.desaulniers@gmail.com> (commit_signer:1/3=33%,authored:1/3=33%,added_lines:1/8=12%,removed_lines:1/1=100%)
linux-kernel@vger.kernel.org (open list)

Anyway, I'll go add sysfs.h to the list, thanks for pointing it out.

> > I should be taking this whole series through my tree.  Joe, thanks for
> > doing this in an automated way, I've been wanting to see this done for a
> > long time.
> 
> btw: there are many uses of a reversed declaration style of DEVICE_ATTR
> 
> Here's another thing that could be done for more DEVICE_ATTR_<FOO> uses.
> 
> ===
> 
> Some DEVICE_ATTR definitions use a reversed static function form from
> the typical.  Convert them to use the more common macro form so it is
> easier to grep for the style.
> 
> i.e.:
>         static ssize_t show_<foo>(...)
> and
>         static ssize_t store_<foo>(...)
> 
> where the static function names in the DEVICE_ATTR_RW macro are reversed
> 
>         static ssize_t <foo>_show(...)
> and
>         static ssize_t <foo>_store(...)
> 
> Done with perl script
> 
> $ cat dev_attr_rw_backwards.perl
> local $/;
> while (<>) {
>     my $file = $_;
>     while ($file =~ m/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,/g) {
>         my $var = $1;
>         if ($file =~ s/\bDEVICE_ATTR\s*\(\s*${var}\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S
>             $file =~ s/\bshow_${var}\b/${var}_show/g;
>             $file =~ s/\bstore_${var}\b/${var}_store/g;
>         }
>     }
>     print $file;
> }
> 
> $ git grep --name-only -w DEVICE_ATTR | \
>   xargs perl -i dev_attr_rw_backwards.perl
> 

Ah, nice, I love perl :)

greg k-h
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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Joe Perches]

On Wed, 2017-12-20 at 10:59 +0100, Greg Kroah-Hartman wrote:
> > > Why you didn't send that patch to the sysfs maintainer is a bit odd...  :)
> > 
> > So here's an opportunity for you:
> > 
> > The sysfs maintainer hasn't added include/linux/sysfs.h to
> > the list of maintained files...
> > 
> > DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
> > M:	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
> > S:	Supported
> > F:	Documentation/kobject.txt
> > F:	drivers/base/
> > F:	fs/debugfs/
> > F:	fs/sysfs/
> > F:	include/linux/debugfs.h
> > F:	include/linux/kobj*
> > F:	lib/kobj*
> 
> Heh, good point, but using get_maintainer.pl does put me at the top of
> the list that you should be cc:ing:
> 
> $ ./scripts/get_maintainer.pl --file include/linux/sysfs.h
> Greg Kroah-Hartman <gregkh@linuxfoundation.org> (commit_signer:3/3=100%,authored:2/3=67%,added_lines:7/8=88%)
> Kate Stewart <kstewart@linuxfoundation.org> (commit_signer:1/3=33%)
> Thomas Gleixner <tglx@linutronix.de> (commit_signer:1/3=33%)
> Philippe Ombredanne <pombredanne@nexb.com> (commit_signer:1/3=33%)
> Nick Desaulniers <nick.desaulniers@gmail.com> (commit_signer:1/3=33%,authored:1/3=33%,added_lines:1/8=12%,removed_lines:1/1=100%)
> linux-kernel@vger.kernel.org (open list)

The script I use to send patches adds --nogit --nogit-fallback
to copy only listed maintainers because people that send cleanup
patches don't generally like to get random patches.

> > btw: there are many uses of a reversed declaration style of DEVICE_ATTR
> > 
> > Here's another thing that could be done for more DEVICE_ATTR_<FOO> uses.
> > 
> > ===
> > 
> > Some DEVICE_ATTR definitions use a reversed static function form from
> > the typical.  Convert them to use the more common macro form so it is
> > easier to grep for the style.
[]
> > $ git grep --name-only -w DEVICE_ATTR | \
> >   xargs perl -i dev_attr_rw_backwards.perl
> Ah, nice, I love perl :

That was a bad copy/paste of the script.

The actual script for RW is:

$ cat dev_attr_rw_backwards.perl
local $/;
while (<>) {
    my $file = $_;
    while ($file =~ m/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,/g) {
	my $var = $1;
	if ($file =~ s/\bDEVICE_ATTR\s*\(\s*${var}\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S_IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*show_${var}\s*,\s*store_${var}\s*\)/DEVICE_ATTR_RW(${var})/g) {
	    $file =~ s/\bshow_${var}\b/${var}_show/g;
	    $file =~ s/\bstore_${var}\b/${var}_store/g;
	}
    }
    print $file;
}

There are 3 different perl scripts for rw, ro, and wo.
and these scripts, because of function renaming and
possible reuse of the original function names by other
string concatenated macros, create some bad conversions
so they need some manual cleanups too.

Perhaps coccinelle could do a better job of it, but
likely string concatenation macro uses are going to
be hard to deal with in any case.

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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Julia Lawall]

On Wed, 20 Dec 2017, Joe Perches wrote:

> On Wed, 2017-12-20 at 10:59 +0100, Greg Kroah-Hartman wrote:
> > > > Why you didn't send that patch to the sysfs maintainer is a bit odd...  :)
> > >
> > > So here's an opportunity for you:
> > >
> > > The sysfs maintainer hasn't added include/linux/sysfs.h to
> > > the list of maintained files...
> > >
> > > DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
> > > M:	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > > T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
> > > S:	Supported
> > > F:	Documentation/kobject.txt
> > > F:	drivers/base/
> > > F:	fs/debugfs/
> > > F:	fs/sysfs/
> > > F:	include/linux/debugfs.h
> > > F:	include/linux/kobj*
> > > F:	lib/kobj*
> >
> > Heh, good point, but using get_maintainer.pl does put me at the top of
> > the list that you should be cc:ing:
> >
> > $ ./scripts/get_maintainer.pl --file include/linux/sysfs.h
> > Greg Kroah-Hartman <gregkh@linuxfoundation.org> (commit_signer:3/3=100%,authored:2/3=67%,added_lines:7/8=88%)
> > Kate Stewart <kstewart@linuxfoundation.org> (commit_signer:1/3=33%)
> > Thomas Gleixner <tglx@linutronix.de> (commit_signer:1/3=33%)
> > Philippe Ombredanne <pombredanne@nexb.com> (commit_signer:1/3=33%)
> > Nick Desaulniers <nick.desaulniers@gmail.com> (commit_signer:1/3=33%,authored:1/3=33%,added_lines:1/8=12%,removed_lines:1/1=100%)
> > linux-kernel@vger.kernel.org (open list)
>
> The script I use to send patches adds --nogit --nogit-fallback
> to copy only listed maintainers because people that send cleanup
> patches don't generally like to get random patches.
>
> > > btw: there are many uses of a reversed declaration style of DEVICE_ATTR
> > >
> > > Here's another thing that could be done for more DEVICE_ATTR_<FOO> uses.
> > >
> > > ===
> > >
> > > Some DEVICE_ATTR definitions use a reversed static function form from
> > > the typical.  Convert them to use the more common macro form so it is
> > > easier to grep for the style.
> []
> > > $ git grep --name-only -w DEVICE_ATTR | \
> > >   xargs perl -i dev_attr_rw_backwards.perl
> > Ah, nice, I love perl :
>
> That was a bad copy/paste of the script.
>
> The actual script for RW is:
>
> $ cat dev_attr_rw_backwards.perl
> local $/;
> while (<>) {
>     my $file = $_;
>     while ($file =~ m/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,/g) {
> 	my $var = $1;
> 	if ($file =~ s/\bDEVICE_ATTR\s*\(\s*${var}\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S_IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*show_${var}\s*,\s*store_${var}\s*\)/DEVICE_ATTR_RW(${var})/g) {
> 	    $file =~ s/\bshow_${var}\b/${var}_show/g;
> 	    $file =~ s/\bstore_${var}\b/${var}_store/g;
> 	}
>     }
>     print $file;
> }
>
> There are 3 different perl scripts for rw, ro, and wo.
> and these scripts, because of function renaming and
> possible reuse of the original function names by other
> string concatenated macros, create some bad conversions
> so they need some manual cleanups too.
>
> Perhaps coccinelle could do a better job of it, but
> likely string concatenation macro uses are going to
> be hard to deal with in any case.

I made a rule for this at one point, but there are cases where the
functions have the wrong names, and then these functions may be used
elsewhere.

julia
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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Peter Ujfalusi]

On 2017-12-20 12:54, Jarkko Nikula wrote:
> On Wed, Dec 20, 2017 at 10:32:11AM +0100, Greg Kroah-Hartman wrote:
>> On Wed, Dec 20, 2017 at 01:24:44AM -0800, Joe Perches wrote:
>>> On Wed, 2017-12-20 at 10:34 +0200, Jarkko Nikula wrote:
>>>> On Tue, Dec 19, 2017 at 10:15:07AM -0800, Joe Perches wrote:
>>>>> Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
>>> [] 
>>>>> diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
>>> []
>>>>> @@ -854,7 +854,7 @@ static ssize_t dma_op_mode_store(struct device *dev,
>>>>>  	return size;
>>>>>  }
>>>>>  
>>>>> -static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
>>>>> +static DEVICE_ATTR_RW(dma_op_mode);
>>>>>  
>>>>
>>>> While I can ack this part here if it helps generic cleanup effort I
>>>> don't understart would it improve code readability in general? Mode 644
>>>> is clear and don't need any grepping but for DEVICE_ATTR_RW() I had to go
>>>> through all of these files in order to see what does it mean:
>>
>> Yeah, 644 is "clear", but _RW() is even more clear.  Ideally I want to
>> get rid of all of the "non-standard" users that set random modes of
>> sysfs files, as we get it wrong too many times.  Using the "defaults" is
>> much better.
>>
> Fair enough. For the sound/soc/omap/ (Acked-by was missing from my
> previous reply):
> 
> Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>

And from me to the same file (sound/soc/omap/mcbsp.c):

Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>


- Péter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Zhang Rui]

On Tue, 2017-12-19 at 10:15 -0800, Joe Perches wrote:
> Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
> 
> Done with perl script:
> 
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) {
> s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S
> _IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*\1_show\s*,\s*\1_store\
> s*\)/DEVICE_ATTR_RW(\1)/g; print;}'
> 
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  arch/s390/kernel/topology.c          |  3 +--
>  arch/tile/kernel/sysfs.c             |  2 +-
>  drivers/gpu/drm/i915/i915_sysfs.c    |  6 ++---
>  drivers/platform/x86/compal-laptop.c | 18 +++++----------
>  drivers/s390/cio/device.c            |  2 +-
>  drivers/scsi/lpfc/lpfc_attr.c        | 43 ++++++++++++------------
> ------------
>  drivers/thermal/thermal_sysfs.c      |  9 ++++----

For the thermal part,
ACK-by: Zhang Rui <rui.zhang@intel.com>

thanks,
rui

>  drivers/tty/serial/sh-sci.c          |  2 +-
>  drivers/usb/host/xhci-dbgcap.c       |  2 +-
>  drivers/usb/phy/phy-tahvo.c          |  2 +-
>  drivers/video/fbdev/auo_k190x.c      |  4 ++--
>  drivers/video/fbdev/w100fb.c         |  4 ++--
>  lib/test_firmware.c                  | 14 +++++-------
>  lib/test_kmod.c                      | 14 +++++-------
>  sound/soc/omap/mcbsp.c               |  4 ++--
>  15 files changed, 49 insertions(+), 80 deletions(-)
> 
> diff --git a/arch/s390/kernel/topology.c
> b/arch/s390/kernel/topology.c
> index 4d5b65e527b5..4b6e0397f66d 100644
> --- a/arch/s390/kernel/topology.c
> +++ b/arch/s390/kernel/topology.c
> @@ -404,8 +404,7 @@ static ssize_t dispatching_store(struct device
> *dev,
>  	put_online_cpus();
>  	return rc ? rc : count;
>  }
> -static DEVICE_ATTR(dispatching, 0644, dispatching_show,
> -			 dispatching_store);
> +static DEVICE_ATTR_RW(dispatching);
>  
>  static ssize_t cpu_polarization_show(struct device *dev,
>  				     struct device_attribute *attr,
> char *buf)
> diff --git a/arch/tile/kernel/sysfs.c b/arch/tile/kernel/sysfs.c
> index 825867c53853..af5024f0fb5a 100644
> --- a/arch/tile/kernel/sysfs.c
> +++ b/arch/tile/kernel/sysfs.c
> @@ -184,7 +184,7 @@ static ssize_t hv_stats_store(struct device *dev,
>  	return n < 0 ? n : count;
>  }
>  
> -static DEVICE_ATTR(hv_stats, 0644, hv_stats_show, hv_stats_store);
> +static DEVICE_ATTR_RW(hv_stats);
>  
>  static int hv_stats_device_add(struct device *dev, struct
> subsys_interface *sif)
>  {
> diff --git a/drivers/gpu/drm/i915/i915_sysfs.c
> b/drivers/gpu/drm/i915/i915_sysfs.c
> index c74a20b80182..1d0ab8ff5915 100644
> --- a/drivers/gpu/drm/i915/i915_sysfs.c
> +++ b/drivers/gpu/drm/i915/i915_sysfs.c
> @@ -447,9 +447,9 @@ static ssize_t gt_min_freq_mhz_store(struct
> device *kdev,
>  
>  static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show,
> NULL);
>  static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show,
> NULL);
> -static DEVICE_ATTR(gt_boost_freq_mhz, S_IRUGO | S_IWUSR,
> gt_boost_freq_mhz_show, gt_boost_freq_mhz_store);
> -static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR,
> gt_max_freq_mhz_show, gt_max_freq_mhz_store);
> -static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR,
> gt_min_freq_mhz_show, gt_min_freq_mhz_store);
> +static DEVICE_ATTR_RW(gt_boost_freq_mhz);
> +static DEVICE_ATTR_RW(gt_max_freq_mhz);
> +static DEVICE_ATTR_RW(gt_min_freq_mhz);
>  
>  static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show,
> NULL);
>  
> diff --git a/drivers/platform/x86/compal-laptop.c
> b/drivers/platform/x86/compal-laptop.c
> index 6bcb750e1865..4f9bc72f0584 100644
> --- a/drivers/platform/x86/compal-laptop.c
> +++ b/drivers/platform/x86/compal-laptop.c
> @@ -679,18 +679,12 @@ static int bat_writeable_property(struct
> power_supply *psy,
>  /* ============== */
>  /* Driver Globals */
>  /* ============== */
> -static DEVICE_ATTR(wake_up_pme,
> -		0644, wake_up_pme_show,		wake_up_pme_s
> tore);
> -static DEVICE_ATTR(wake_up_modem,
> -		0644, wake_up_modem_show,	wake_up_modem_store
> );
> -static DEVICE_ATTR(wake_up_lan,
> -		0644, wake_up_lan_show,	wake_up_lan_store);
> -static DEVICE_ATTR(wake_up_wlan,
> -		0644, wake_up_wlan_show,	wake_up_wlan_store);
> -static DEVICE_ATTR(wake_up_key,
> -		0644, wake_up_key_show,	wake_up_key_store);
> -static DEVICE_ATTR(wake_up_mouse,
> -		0644, wake_up_mouse_show,	wake_up_mouse_store
> );
> +static DEVICE_ATTR_RW(wake_up_pme);
> +static DEVICE_ATTR_RW(wake_up_modem);
> +static DEVICE_ATTR_RW(wake_up_lan);
> +static DEVICE_ATTR_RW(wake_up_wlan);
> +static DEVICE_ATTR_RW(wake_up_key);
> +static DEVICE_ATTR_RW(wake_up_mouse);
>  
>  static DEVICE_ATTR(fan1_input,  S_IRUGO, fan_show,          NULL);
>  static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu,          NULL);
> diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
> index 75a245f38e2e..6eefb67b31f3 100644
> --- a/drivers/s390/cio/device.c
> +++ b/drivers/s390/cio/device.c
> @@ -600,7 +600,7 @@ static ssize_t vpm_show(struct device *dev,
> struct device_attribute *attr,
>  static DEVICE_ATTR(devtype, 0444, devtype_show, NULL);
>  static DEVICE_ATTR(cutype, 0444, cutype_show, NULL);
>  static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
> -static DEVICE_ATTR(online, 0644, online_show, online_store);
> +static DEVICE_ATTR_RW(online);
>  static DEVICE_ATTR(availability, 0444, available_show, NULL);
>  static DEVICE_ATTR(logging, 0200, NULL, initiate_logging);
>  static DEVICE_ATTR(vpm, 0444, vpm_show, NULL);
> diff --git a/drivers/scsi/lpfc/lpfc_attr.c
> b/drivers/scsi/lpfc/lpfc_attr.c
> index 797bb42a6306..95f7ba3c3f1a 100644
> --- a/drivers/scsi/lpfc/lpfc_attr.c
> +++ b/drivers/scsi/lpfc/lpfc_attr.c
> @@ -2519,8 +2519,7 @@ lpfc_soft_wwpn_store(struct device *dev, struct
> device_attribute *attr,
>  				"reinit adapter - %d\n", stat2);
>  	return (stat1 || stat2) ? -EIO : count;
>  }
> -static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,
> -		   lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
> +static DEVICE_ATTR_RW(lpfc_soft_wwpn);
>  
>  /**
>   * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the
> adapter
> @@ -2583,8 +2582,7 @@ lpfc_soft_wwnn_store(struct device *dev, struct
> device_attribute *attr,
>  
>  	return count;
>  }
> -static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,
> -		   lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
> +static DEVICE_ATTR_RW(lpfc_soft_wwnn);
>  
>  /**
>   * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe
> enabled for
> @@ -3102,8 +3100,7 @@ MODULE_PARM_DESC(lpfc_poll, "FCP ring polling
> mode control:"
>  		 " 1 - poll with interrupts enabled"
>  		 " 3 - poll and disable FCP ring interrupts");
>  
> -static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
> -		   lpfc_poll_show, lpfc_poll_store);
> +static DEVICE_ATTR_RW(lpfc_poll);
>  
>  int lpfc_no_hba_reset_cnt;
>  unsigned long lpfc_no_hba_reset[MAX_HBAS_NO_RESET] = {
> @@ -3336,8 +3333,7 @@ lpfc_nodev_tmo_set(struct lpfc_vport *vport,
> int val)
>  
>  lpfc_vport_param_store(nodev_tmo)
>  
> -static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
> -		   lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
> +static DEVICE_ATTR_RW(lpfc_nodev_tmo);
>  
>  /*
>  # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices
> that
> @@ -3386,8 +3382,7 @@ lpfc_devloss_tmo_set(struct lpfc_vport *vport,
> int val)
>  }
>  
>  lpfc_vport_param_store(devloss_tmo)
> -static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
> -		   lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
> +static DEVICE_ATTR_RW(lpfc_devloss_tmo);
>  
>  /*
>   * lpfc_suppress_rsp: Enable suppress rsp feature is firmware
> supports it
> @@ -3580,8 +3575,7 @@ lpfc_restrict_login_set(struct lpfc_vport
> *vport, int val)
>  	return 0;
>  }
>  lpfc_vport_param_store(restrict_login);
> -static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR,
> -		   lpfc_restrict_login_show,
> lpfc_restrict_login_store);
> +static DEVICE_ATTR_RW(lpfc_restrict_login);
>  
>  /*
>  # Some disk devices have a "select ID" or "select Target"
> capability.
> @@ -3695,8 +3689,7 @@ lpfc_topology_store(struct device *dev, struct
> device_attribute *attr,
>  }
>  
>  lpfc_param_show(topology)
> -static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
> -		lpfc_topology_show, lpfc_topology_store);
> +static DEVICE_ATTR_RW(lpfc_topology);
>  
>  /**
>   * lpfc_static_vport_show: Read callback function for
> @@ -3954,8 +3947,7 @@ lpfc_stat_data_ctrl_show(struct device *dev,
> struct device_attribute *attr,
>  /*
>   * Sysfs attribute to control the statistical data collection.
>   */
> -static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR,
> -		   lpfc_stat_data_ctrl_show,
> lpfc_stat_data_ctrl_store);
> +static DEVICE_ATTR_RW(lpfc_stat_data_ctrl);
>  
>  /*
>   * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
> @@ -4194,8 +4186,7 @@ lpfc_link_speed_init(struct lpfc_hba *phba, int
> val)
>  	return -EINVAL;
>  }
>  
> -static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
> -		   lpfc_link_speed_show, lpfc_link_speed_store);
> +static DEVICE_ATTR_RW(lpfc_link_speed);
>  
>  /*
>  # lpfc_aer_support: Support PCIe device Advanced Error Reporting
> (AER)
> @@ -4288,8 +4279,7 @@ lpfc_aer_support_store(struct device *dev,
> struct device_attribute *attr,
>  	return rc;
>  }
>  
> -static DEVICE_ATTR(lpfc_aer_support, S_IRUGO | S_IWUSR,
> -		   lpfc_aer_support_show, lpfc_aer_support_store);
> +static DEVICE_ATTR_RW(lpfc_aer_support);
>  
>  /**
>   * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled
> device
> @@ -4436,8 +4426,7 @@ LPFC_ATTR(sriov_nr_virtfn,
> LPFC_DEF_VFN_PER_PFN, 0, LPFC_MAX_VFN_PER_PFN,
>  	"Enable PCIe device SR-IOV virtual fn");
>  
>  lpfc_param_show(sriov_nr_virtfn)
> -static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR,
> -		   lpfc_sriov_nr_virtfn_show,
> lpfc_sriov_nr_virtfn_store);
> +static DEVICE_ATTR_RW(lpfc_sriov_nr_virtfn);
>  
>  /**
>   * lpfc_request_firmware_store - Request for Linux generic firmware
> upgrade
> @@ -4611,8 +4600,7 @@ lpfc_fcp_imax_init(struct lpfc_hba *phba, int
> val)
>  	return 0;
>  }
>  
> -static DEVICE_ATTR(lpfc_fcp_imax, S_IRUGO | S_IWUSR,
> -		   lpfc_fcp_imax_show, lpfc_fcp_imax_store);
> +static DEVICE_ATTR_RW(lpfc_fcp_imax);
>  
>  /*
>   * lpfc_auto_imax: Controls Auto-interrupt coalescing values
> support.
> @@ -4772,8 +4760,7 @@ lpfc_fcp_cpu_map_init(struct lpfc_hba *phba,
> int val)
>  	return 0;
>  }
>  
> -static DEVICE_ATTR(lpfc_fcp_cpu_map, S_IRUGO | S_IWUSR,
> -		   lpfc_fcp_cpu_map_show, lpfc_fcp_cpu_map_store);
> +static DEVICE_ATTR_RW(lpfc_fcp_cpu_map);
>  
>  /*
>  # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
> @@ -4859,9 +4846,7 @@ lpfc_max_scsicmpl_time_set(struct lpfc_vport
> *vport, int val)
>  	return 0;
>  }
>  lpfc_vport_param_store(max_scsicmpl_time);
> -static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR,
> -		   lpfc_max_scsicmpl_time_show,
> -		   lpfc_max_scsicmpl_time_store);
> +static DEVICE_ATTR_RW(lpfc_max_scsicmpl_time);
>  
>  /*
>  # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement.
> Value
> diff --git a/drivers/thermal/thermal_sysfs.c
> b/drivers/thermal/thermal_sysfs.c
> index fb80c96d8f73..c008af7fb480 100644
> --- a/drivers/thermal/thermal_sysfs.c
> +++ b/drivers/thermal/thermal_sysfs.c
> @@ -398,14 +398,13 @@ create_s32_tzp_attr(offset);
>   */
>  static DEVICE_ATTR(type, 0444, type_show, NULL);
>  static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show,
> policy_store);
> +static DEVICE_ATTR_RW(policy);
>  static DEVICE_ATTR(available_policies, S_IRUGO,
> available_policies_show, NULL);
> -static DEVICE_ATTR(sustainable_power, S_IWUSR | S_IRUGO,
> sustainable_power_show,
> -		   sustainable_power_store);
> +static DEVICE_ATTR_RW(sustainable_power);
>  
>  /* These thermal zone device attributes are created based on
> conditions */
> -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show,
> passive_store);
> +static DEVICE_ATTR_RW(mode);
> +static DEVICE_ATTR_RW(passive);
>  
>  /* These attributes are unconditionally added to a thermal zone */
>  static struct attribute *thermal_zone_dev_attrs[] = {
> diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-
> sci.c
> index d9f399c4e90c..7257c078e155 100644
> --- a/drivers/tty/serial/sh-sci.c
> +++ b/drivers/tty/serial/sh-sci.c
> @@ -1144,7 +1144,7 @@ static ssize_t rx_fifo_timeout_store(struct
> device *dev,
>  	return count;
>  }
>  
> -static DEVICE_ATTR(rx_fifo_timeout, 0644, rx_fifo_timeout_show,
> rx_fifo_timeout_store);
> +static DEVICE_ATTR_RW(rx_fifo_timeout);
>  
>  
>  #ifdef CONFIG_SERIAL_SH_SCI_DMA
> diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-
> dbgcap.c
> index 452df0f87d6e..a1ab8acf39ba 100644
> --- a/drivers/usb/host/xhci-dbgcap.c
> +++ b/drivers/usb/host/xhci-dbgcap.c
> @@ -920,7 +920,7 @@ static ssize_t dbc_store(struct device *dev,
>  	return count;
>  }
>  
> -static DEVICE_ATTR(dbc, 0644, dbc_show, dbc_store);
> +static DEVICE_ATTR_RW(dbc);
>  
>  int xhci_dbc_init(struct xhci_hcd *xhci)
>  {
> diff --git a/drivers/usb/phy/phy-tahvo.c b/drivers/usb/phy/phy-
> tahvo.c
> index b3ce42edb373..7f7c5c82420d 100644
> --- a/drivers/usb/phy/phy-tahvo.c
> +++ b/drivers/usb/phy/phy-tahvo.c
> @@ -310,7 +310,7 @@ static ssize_t otg_mode_store(struct device
> *device,
>  
>  	return r;
>  }
> -static DEVICE_ATTR(otg_mode, 0644, otg_mode_show, otg_mode_store);
> +static DEVICE_ATTR_RW(otg_mode);
>  
>  static struct attribute *tahvo_attributes[] = {
>  	&dev_attr_vbus.attr,
> diff --git a/drivers/video/fbdev/auo_k190x.c
> b/drivers/video/fbdev/auo_k190x.c
> index 0d06038324e0..1e383c547633 100644
> --- a/drivers/video/fbdev/auo_k190x.c
> +++ b/drivers/video/fbdev/auo_k190x.c
> @@ -708,8 +708,8 @@ static ssize_t temp_show(struct device *dev,
> struct device_attribute *attr,
>  	return sprintf(buf, "%d\n", temp);
>  }
>  
> -static DEVICE_ATTR(update_mode, 0644, update_mode_show,
> update_mode_store);
> -static DEVICE_ATTR(flash, 0644, flash_show, flash_store);
> +static DEVICE_ATTR_RW(update_mode);
> +static DEVICE_ATTR_RW(flash);
>  static DEVICE_ATTR(temp, 0644, temp_show, NULL);
>  
>  static struct attribute *auok190x_attributes[] = {
> diff --git a/drivers/video/fbdev/w100fb.c
> b/drivers/video/fbdev/w100fb.c
> index d570e19a2864..035ff6e02894 100644
> --- a/drivers/video/fbdev/w100fb.c
> +++ b/drivers/video/fbdev/w100fb.c
> @@ -110,7 +110,7 @@ static ssize_t flip_store(struct device *dev,
> struct device_attribute *attr, con
>  	return count;
>  }
>  
> -static DEVICE_ATTR(flip, 0644, flip_show, flip_store);
> +static DEVICE_ATTR_RW(flip);
>  
>  static ssize_t w100fb_reg_read(struct device *dev, struct
> device_attribute *attr, const char *buf, size_t count)
>  {
> @@ -166,7 +166,7 @@ static ssize_t fastpllclk_store(struct device
> *dev, struct device_attribute *att
>  	return count;
>  }
>  
> -static DEVICE_ATTR(fastpllclk, 0644, fastpllclk_show,
> fastpllclk_store);
> +static DEVICE_ATTR_RW(fastpllclk);
>  
>  /*
>   * Some touchscreens need hsync information from the video driver to
> diff --git a/lib/test_firmware.c b/lib/test_firmware.c
> index 64a4c76cba2b..964784dc1602 100644
> --- a/lib/test_firmware.c
> +++ b/lib/test_firmware.c
> @@ -359,7 +359,7 @@ static ssize_t config_name_show(struct device
> *dev,
>  {
>  	return config_test_show_str(buf, test_fw_config->name);
>  }
> -static DEVICE_ATTR(config_name, 0644, config_name_show,
> config_name_store);
> +static DEVICE_ATTR_RW(config_name);
>  
>  static ssize_t config_num_requests_store(struct device *dev,
>  					 struct device_attribute
> *attr,
> @@ -388,8 +388,7 @@ static ssize_t config_num_requests_show(struct
> device *dev,
>  {
>  	return test_dev_config_show_u8(buf, test_fw_config-
> >num_requests);
>  }
> -static DEVICE_ATTR(config_num_requests, 0644,
> config_num_requests_show,
> -		   config_num_requests_store);
> +static DEVICE_ATTR_RW(config_num_requests);
>  
>  static ssize_t config_sync_direct_store(struct device *dev,
>  					struct device_attribute
> *attr,
> @@ -411,8 +410,7 @@ static ssize_t config_sync_direct_show(struct
> device *dev,
>  {
>  	return test_dev_config_show_bool(buf, test_fw_config-
> >sync_direct);
>  }
> -static DEVICE_ATTR(config_sync_direct, 0644,
> config_sync_direct_show,
> -		   config_sync_direct_store);
> +static DEVICE_ATTR_RW(config_sync_direct);
>  
>  static ssize_t config_send_uevent_store(struct device *dev,
>  					struct device_attribute
> *attr,
> @@ -428,8 +426,7 @@ static ssize_t config_send_uevent_show(struct
> device *dev,
>  {
>  	return test_dev_config_show_bool(buf, test_fw_config-
> >send_uevent);
>  }
> -static DEVICE_ATTR(config_send_uevent, 0644,
> config_send_uevent_show,
> -		   config_send_uevent_store);
> +static DEVICE_ATTR_RW(config_send_uevent);
>  
>  static ssize_t config_read_fw_idx_store(struct device *dev,
>  					struct device_attribute
> *attr,
> @@ -445,8 +442,7 @@ static ssize_t config_read_fw_idx_show(struct
> device *dev,
>  {
>  	return test_dev_config_show_u8(buf, test_fw_config-
> >read_fw_idx);
>  }
> -static DEVICE_ATTR(config_read_fw_idx, 0644,
> config_read_fw_idx_show,
> -		   config_read_fw_idx_store);
> +static DEVICE_ATTR_RW(config_read_fw_idx);
>  
>  
>  static ssize_t trigger_request_store(struct device *dev,
> diff --git a/lib/test_kmod.c b/lib/test_kmod.c
> index 337f408b4de6..e372b97eee13 100644
> --- a/lib/test_kmod.c
> +++ b/lib/test_kmod.c
> @@ -694,8 +694,7 @@ static ssize_t config_test_driver_show(struct
> device *dev,
>  	return config_test_show_str(&test_dev->config_mutex, buf,
>  				    config->test_driver);
>  }
> -static DEVICE_ATTR(config_test_driver, 0644,
> config_test_driver_show,
> -		   config_test_driver_store);
> +static DEVICE_ATTR_RW(config_test_driver);
>  
>  static ssize_t config_test_fs_store(struct device *dev,
>  				    struct device_attribute *attr,
> @@ -726,8 +725,7 @@ static ssize_t config_test_fs_show(struct device
> *dev,
>  	return config_test_show_str(&test_dev->config_mutex, buf,
>  				    config->test_fs);
>  }
> -static DEVICE_ATTR(config_test_fs, 0644, config_test_fs_show,
> -		   config_test_fs_store);
> +static DEVICE_ATTR_RW(config_test_fs);
>  
>  static int trigger_config_run_type(struct kmod_test_device
> *test_dev,
>  				   enum kmod_test_case test_case,
> @@ -1012,8 +1010,7 @@ static ssize_t config_num_threads_show(struct
> device *dev,
>  
>  	return test_dev_config_show_int(test_dev, buf, config-
> >num_threads);
>  }
> -static DEVICE_ATTR(config_num_threads, 0644,
> config_num_threads_show,
> -		   config_num_threads_store);
> +static DEVICE_ATTR_RW(config_num_threads);
>  
>  static ssize_t config_test_case_store(struct device *dev,
>  				      struct device_attribute *attr,
> @@ -1037,8 +1034,7 @@ static ssize_t config_test_case_show(struct
> device *dev,
>  
>  	return test_dev_config_show_uint(test_dev, buf, config-
> >test_case);
>  }
> -static DEVICE_ATTR(config_test_case, 0644, config_test_case_show,
> -		   config_test_case_store);
> +static DEVICE_ATTR_RW(config_test_case);
>  
>  static ssize_t test_result_show(struct device *dev,
>  				struct device_attribute *attr,
> @@ -1049,7 +1045,7 @@ static ssize_t test_result_show(struct device
> *dev,
>  
>  	return test_dev_config_show_int(test_dev, buf, config-
> >test_result);
>  }
> -static DEVICE_ATTR(test_result, 0644, test_result_show,
> test_result_store);
> +static DEVICE_ATTR_RW(test_result);
>  
>  #define TEST_KMOD_DEV_ATTR(name)		&dev_attr_##name.att
> r
>  
> diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
> index 7a54e3083203..79d4dc785e5c 100644
> --- a/sound/soc/omap/mcbsp.c
> +++ b/sound/soc/omap/mcbsp.c
> @@ -854,7 +854,7 @@ static ssize_t dma_op_mode_store(struct device
> *dev,
>  	return size;
>  }
>  
> -static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show,
> dma_op_mode_store);
> +static DEVICE_ATTR_RW(dma_op_mode);
>  
>  static const struct attribute *additional_attrs[] = {
>  	&dev_attr_max_tx_thres.attr,
> @@ -923,7 +923,7 @@ static ssize_t st_taps_store(struct device *dev,
>  	return size;
>  }
>  
> -static DEVICE_ATTR(st_taps, 0644, st_taps_show, st_taps_store);
> +static DEVICE_ATTR_RW(st_taps);
>  
>  static const struct attribute *sidetone_attrs[] = {
>  	&dev_attr_st_taps.attr,
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Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

[Bartlomiej Zolnierkiewicz]

On Tuesday, December 19, 2017 10:15:07 AM Joe Perches wrote:
> Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
> 
> Done with perl script:
> 
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S_IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*\1_show\s*,\s*\1_store\s*\)/DEVICE_ATTR_RW(\1)/g; print;}'
> 
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  arch/s390/kernel/topology.c          |  3 +--
>  arch/tile/kernel/sysfs.c             |  2 +-
>  drivers/gpu/drm/i915/i915_sysfs.c    |  6 ++---
>  drivers/platform/x86/compal-laptop.c | 18 +++++----------
>  drivers/s390/cio/device.c            |  2 +-
>  drivers/scsi/lpfc/lpfc_attr.c        | 43 ++++++++++++------------------------
>  drivers/thermal/thermal_sysfs.c      |  9 ++++----
>  drivers/tty/serial/sh-sci.c          |  2 +-
>  drivers/usb/host/xhci-dbgcap.c       |  2 +-
>  drivers/usb/phy/phy-tahvo.c          |  2 +-
>  drivers/video/fbdev/auo_k190x.c      |  4 ++--
>  drivers/video/fbdev/w100fb.c         |  4 ++--
>  lib/test_firmware.c                  | 14 +++++-------
>  lib/test_kmod.c                      | 14 +++++-------
>  sound/soc/omap/mcbsp.c               |  4 ++--
>  15 files changed, 49 insertions(+), 80 deletions(-)

For fbdev changes:

Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

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[-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Joe Perches]

Convert DEVICE_ATTR uses to DEVICE_ATTR_RO where possible.

Done with perl script:

$ git grep -w --name-only DEVICE_ATTR | \
  xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IRUGO\s*|\s*0444\s*)\)?\s*,\s*\1_show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(\1)/g; print;}'

Signed-off-by: Joe Perches <joe@perches.com>
---
 arch/arm/mach-pxa/sharpsl_pm.c                       |  4 ++--
 arch/sh/drivers/push-switch.c                        |  2 +-
 arch/tile/kernel/sysfs.c                             | 10 +++++-----
 drivers/acpi/device_sysfs.c                          |  6 +++---
 drivers/char/ipmi/ipmi_msghandler.c                  | 17 ++++++++---------
 drivers/gpu/drm/i915/i915_sysfs.c                    |  6 +++---
 drivers/nvme/host/core.c                             | 10 +++++-----
 drivers/s390/cio/css.c                               |  8 ++++----
 drivers/s390/cio/device.c                            |  8 ++++----
 drivers/s390/crypto/ap_card.c                        |  2 +-
 drivers/scsi/hpsa.c                                  | 10 +++++-----
 drivers/scsi/lpfc/lpfc_attr.c                        | 18 ++++++++----------
 drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c |  8 ++++----
 drivers/thermal/thermal_sysfs.c                      |  6 +++---
 sound/soc/soc-core.c                                 |  2 +-
 sound/soc/soc-dapm.c                                 |  2 +-
 16 files changed, 58 insertions(+), 61 deletions(-)

diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-pxa/sharpsl_pm.c
index 398ba9ba2632..ef9fd9b759cb 100644
--- a/arch/arm/mach-pxa/sharpsl_pm.c
+++ b/arch/arm/mach-pxa/sharpsl_pm.c
@@ -802,8 +802,8 @@ static ssize_t battery_voltage_show(struct device *dev, struct device_attribute
 	return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage);
 }
 
-static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
-static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
+static DEVICE_ATTR_RO(battery_percentage);
+static DEVICE_ATTR_RO(battery_voltage);
 
 extern void (*apm_get_power_status)(struct apm_power_info *);
 
diff --git a/arch/sh/drivers/push-switch.c b/arch/sh/drivers/push-switch.c
index a17181160233..762bc5619910 100644
--- a/arch/sh/drivers/push-switch.c
+++ b/arch/sh/drivers/push-switch.c
@@ -24,7 +24,7 @@ static ssize_t switch_show(struct device *dev,
 	struct push_switch_platform_info *psw_info = dev->platform_data;
 	return sprintf(buf, "%s\n", psw_info->name);
 }
-static DEVICE_ATTR(switch, S_IRUGO, switch_show, NULL);
+static DEVICE_ATTR_RO(switch);
 
 static void switch_timer(struct timer_list *t)
 {
diff --git a/arch/tile/kernel/sysfs.c b/arch/tile/kernel/sysfs.c
index af5024f0fb5a..b09456a3d77a 100644
--- a/arch/tile/kernel/sysfs.c
+++ b/arch/tile/kernel/sysfs.c
@@ -38,7 +38,7 @@ static ssize_t chip_width_show(struct device *dev,
 {
 	return sprintf(page, "%u\n", smp_width);
 }
-static DEVICE_ATTR(chip_width, 0444, chip_width_show, NULL);
+static DEVICE_ATTR_RO(chip_width);
 
 static ssize_t chip_height_show(struct device *dev,
 				struct device_attribute *attr,
@@ -46,7 +46,7 @@ static ssize_t chip_height_show(struct device *dev,
 {
 	return sprintf(page, "%u\n", smp_height);
 }
-static DEVICE_ATTR(chip_height, 0444, chip_height_show, NULL);
+static DEVICE_ATTR_RO(chip_height);
 
 static ssize_t chip_serial_show(struct device *dev,
 				struct device_attribute *attr,
@@ -54,7 +54,7 @@ static ssize_t chip_serial_show(struct device *dev,
 {
 	return get_hv_confstr(page, HV_CONFSTR_CHIP_SERIAL_NUM);
 }
-static DEVICE_ATTR(chip_serial, 0444, chip_serial_show, NULL);
+static DEVICE_ATTR_RO(chip_serial);
 
 static ssize_t chip_revision_show(struct device *dev,
 				  struct device_attribute *attr,
@@ -62,7 +62,7 @@ static ssize_t chip_revision_show(struct device *dev,
 {
 	return get_hv_confstr(page, HV_CONFSTR_CHIP_REV);
 }
-static DEVICE_ATTR(chip_revision, 0444, chip_revision_show, NULL);
+static DEVICE_ATTR_RO(chip_revision);
 
 
 static ssize_t type_show(struct device *dev,
@@ -71,7 +71,7 @@ static ssize_t type_show(struct device *dev,
 {
 	return sprintf(page, "tilera\n");
 }
-static DEVICE_ATTR(type, 0444, type_show, NULL);
+static DEVICE_ATTR_RO(type);
 
 #define HV_CONF_ATTR(name, conf)					\
 	static ssize_t name ## _show(struct device *dev,		\
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
index a041689e5701..545e91420cde 100644
--- a/drivers/acpi/device_sysfs.c
+++ b/drivers/acpi/device_sysfs.c
@@ -357,7 +357,7 @@ static ssize_t real_power_state_show(struct device *dev,
 	return sprintf(buf, "%s\n", acpi_power_state_string(state));
 }
 
-static DEVICE_ATTR(real_power_state, 0444, real_power_state_show, NULL);
+static DEVICE_ATTR_RO(real_power_state);
 
 static ssize_t power_state_show(struct device *dev,
 				struct device_attribute *attr, char *buf)
@@ -367,7 +367,7 @@ static ssize_t power_state_show(struct device *dev,
 	return sprintf(buf, "%s\n", acpi_power_state_string(adev->power.state));
 }
 
-static DEVICE_ATTR(power_state, 0444, power_state_show, NULL);
+static DEVICE_ATTR_RO(power_state);
 
 static ssize_t
 acpi_eject_store(struct device *d, struct device_attribute *attr,
@@ -462,7 +462,7 @@ static ssize_t description_show(struct device *dev,
 
 	return result;
 }
-static DEVICE_ATTR(description, 0444, description_show, NULL);
+static DEVICE_ATTR_RO(description);
 
 static ssize_t
 acpi_device_sun_show(struct device *dev, struct device_attribute *attr,
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index f45732a2cb3e..7f51acd74e10 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2588,7 +2588,7 @@ static ssize_t device_id_show(struct device *dev,
 
 	return snprintf(buf, 10, "%u\n", id.device_id);
 }
-static DEVICE_ATTR(device_id, S_IRUGO, device_id_show, NULL);
+static DEVICE_ATTR_RO(device_id);
 
 static ssize_t provides_device_sdrs_show(struct device *dev,
 					 struct device_attribute *attr,
@@ -2604,8 +2604,7 @@ static ssize_t provides_device_sdrs_show(struct device *dev,
 
 	return snprintf(buf, 10, "%u\n", (id.device_revision & 0x80) >> 7);
 }
-static DEVICE_ATTR(provides_device_sdrs, S_IRUGO, provides_device_sdrs_show,
-		   NULL);
+static DEVICE_ATTR_RO(provides_device_sdrs);
 
 static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
 			     char *buf)
@@ -2620,7 +2619,7 @@ static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
 
 	return snprintf(buf, 20, "%u\n", id.device_revision & 0x0F);
 }
-static DEVICE_ATTR(revision, S_IRUGO, revision_show, NULL);
+static DEVICE_ATTR_RO(revision);
 
 static ssize_t firmware_revision_show(struct device *dev,
 				      struct device_attribute *attr,
@@ -2637,7 +2636,7 @@ static ssize_t firmware_revision_show(struct device *dev,
 	return snprintf(buf, 20, "%u.%x\n", id.firmware_revision_1,
 			id.firmware_revision_2);
 }
-static DEVICE_ATTR(firmware_revision, S_IRUGO, firmware_revision_show, NULL);
+static DEVICE_ATTR_RO(firmware_revision);
 
 static ssize_t ipmi_version_show(struct device *dev,
 				 struct device_attribute *attr,
@@ -2655,7 +2654,7 @@ static ssize_t ipmi_version_show(struct device *dev,
 			ipmi_version_major(&id),
 			ipmi_version_minor(&id));
 }
-static DEVICE_ATTR(ipmi_version, S_IRUGO, ipmi_version_show, NULL);
+static DEVICE_ATTR_RO(ipmi_version);
 
 static ssize_t add_dev_support_show(struct device *dev,
 				    struct device_attribute *attr,
@@ -2688,7 +2687,7 @@ static ssize_t manufacturer_id_show(struct device *dev,
 
 	return snprintf(buf, 20, "0x%6.6x\n", id.manufacturer_id);
 }
-static DEVICE_ATTR(manufacturer_id, S_IRUGO, manufacturer_id_show, NULL);
+static DEVICE_ATTR_RO(manufacturer_id);
 
 static ssize_t product_id_show(struct device *dev,
 			       struct device_attribute *attr,
@@ -2704,7 +2703,7 @@ static ssize_t product_id_show(struct device *dev,
 
 	return snprintf(buf, 10, "0x%4.4x\n", id.product_id);
 }
-static DEVICE_ATTR(product_id, S_IRUGO, product_id_show, NULL);
+static DEVICE_ATTR_RO(product_id);
 
 static ssize_t aux_firmware_rev_show(struct device *dev,
 				     struct device_attribute *attr,
@@ -2742,7 +2741,7 @@ static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
 
 	return snprintf(buf, 38, "%pUl\n", guid.b);
 }
-static DEVICE_ATTR(guid, S_IRUGO, guid_show, NULL);
+static DEVICE_ATTR_RO(guid);
 
 static struct attribute *bmc_dev_attrs[] = {
 	&dev_attr_device_id.attr,
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 1d0ab8ff5915..b33d2158c234 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -445,13 +445,13 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
 	return ret ?: count;
 }
 
-static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL);
-static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL);
+static DEVICE_ATTR_RO(gt_act_freq_mhz);
+static DEVICE_ATTR_RO(gt_cur_freq_mhz);
 static DEVICE_ATTR_RW(gt_boost_freq_mhz);
 static DEVICE_ATTR_RW(gt_max_freq_mhz);
 static DEVICE_ATTR_RW(gt_min_freq_mhz);
 
-static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show, NULL);
+static DEVICE_ATTR_RO(vlv_rpe_freq_mhz);
 
 static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf);
 static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL);
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 63691e251f8c..8f9fa6f1dfb4 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2516,14 +2516,14 @@ static ssize_t wwid_show(struct device *dev, struct device_attribute *attr,
 		serial_len, subsys->serial, model_len, subsys->model,
 		head->ns_id);
 }
-static DEVICE_ATTR(wwid, S_IRUGO, wwid_show, NULL);
+static DEVICE_ATTR_RO(wwid);
 
 static ssize_t nguid_show(struct device *dev, struct device_attribute *attr,
 		char *buf)
 {
 	return sprintf(buf, "%pU\n", dev_to_ns_head(dev)->ids.nguid);
 }
-static DEVICE_ATTR(nguid, S_IRUGO, nguid_show, NULL);
+static DEVICE_ATTR_RO(nguid);
 
 static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
 		char *buf)
@@ -2540,21 +2540,21 @@ static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
 	}
 	return sprintf(buf, "%pU\n", &ids->uuid);
 }
-static DEVICE_ATTR(uuid, S_IRUGO, uuid_show, NULL);
+static DEVICE_ATTR_RO(uuid);
 
 static ssize_t eui_show(struct device *dev, struct device_attribute *attr,
 		char *buf)
 {
 	return sprintf(buf, "%8ph\n", dev_to_ns_head(dev)->ids.eui64);
 }
-static DEVICE_ATTR(eui, S_IRUGO, eui_show, NULL);
+static DEVICE_ATTR_RO(eui);
 
 static ssize_t nsid_show(struct device *dev, struct device_attribute *attr,
 		char *buf)
 {
 	return sprintf(buf, "%d\n", dev_to_ns_head(dev)->ns_id);
 }
-static DEVICE_ATTR(nsid, S_IRUGO, nsid_show, NULL);
+static DEVICE_ATTR_RO(nsid);
 
 static struct attribute *nvme_ns_id_attrs[] = {
 	&dev_attr_wwid.attr,
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 0f11dce6e224..9263a0fb3858 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -268,7 +268,7 @@ static ssize_t type_show(struct device *dev, struct device_attribute *attr,
 	return sprintf(buf, "%01x\n", sch->st);
 }
 
-static DEVICE_ATTR(type, 0444, type_show, NULL);
+static DEVICE_ATTR_RO(type);
 
 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
 			     char *buf)
@@ -278,7 +278,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
 	return sprintf(buf, "css:t%01X\n", sch->st);
 }
 
-static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
+static DEVICE_ATTR_RO(modalias);
 
 static struct attribute *subch_attrs[] = {
 	&dev_attr_type.attr,
@@ -315,7 +315,7 @@ static ssize_t chpids_show(struct device *dev,
 	ret += sprintf(buf + ret, "\n");
 	return ret;
 }
-static DEVICE_ATTR(chpids, 0444, chpids_show, NULL);
+static DEVICE_ATTR_RO(chpids);
 
 static ssize_t pimpampom_show(struct device *dev,
 			      struct device_attribute *attr,
@@ -327,7 +327,7 @@ static ssize_t pimpampom_show(struct device *dev,
 	return sprintf(buf, "%02x %02x %02x\n",
 		       pmcw->pim, pmcw->pam, pmcw->pom);
 }
-static DEVICE_ATTR(pimpampom, 0444, pimpampom_show, NULL);
+static DEVICE_ATTR_RO(pimpampom);
 
 static struct attribute *io_subchannel_type_attrs[] = {
 	&dev_attr_chpids.attr,
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 6eefb67b31f3..f50ea035aa9b 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -597,13 +597,13 @@ static ssize_t vpm_show(struct device *dev, struct device_attribute *attr,
 	return sprintf(buf, "%02x\n", sch->vpm);
 }
 
-static DEVICE_ATTR(devtype, 0444, devtype_show, NULL);
-static DEVICE_ATTR(cutype, 0444, cutype_show, NULL);
-static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
+static DEVICE_ATTR_RO(devtype);
+static DEVICE_ATTR_RO(cutype);
+static DEVICE_ATTR_RO(modalias);
 static DEVICE_ATTR_RW(online);
 static DEVICE_ATTR(availability, 0444, available_show, NULL);
 static DEVICE_ATTR(logging, 0200, NULL, initiate_logging);
-static DEVICE_ATTR(vpm, 0444, vpm_show, NULL);
+static DEVICE_ATTR_RO(vpm);
 
 static struct attribute *io_subchannel_attrs[] = {
 	&dev_attr_logging.attr,
diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c
index 97a8cf578116..2c726df210f6 100644
--- a/drivers/s390/crypto/ap_card.c
+++ b/drivers/s390/crypto/ap_card.c
@@ -57,7 +57,7 @@ static ssize_t ap_functions_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions);
 }
 
-static DEVICE_ATTR(ap_functions, 0444, ap_functions_show, NULL);
+static DEVICE_ATTR_RO(ap_functions);
 
 static ssize_t ap_req_count_show(struct device *dev,
 				 struct device_attribute *attr,
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index b0aa5dc1d54c..d62377b68ef4 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -901,14 +901,14 @@ static ssize_t host_show_legacy_board(struct device *dev,
 	return snprintf(buf, 20, "%d\n", h->legacy_board ? 1 : 0);
 }
 
-static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
-static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
-static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
+static DEVICE_ATTR_RO(raid_level);
+static DEVICE_ATTR_RO(lunid);
+static DEVICE_ATTR_RO(unique_id);
 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
-static DEVICE_ATTR(sas_address, S_IRUGO, sas_address_show, NULL);
+static DEVICE_ATTR_RO(sas_address);
 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
 			host_show_hp_ssd_smart_path_enabled, NULL);
-static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
+static DEVICE_ATTR_RO(path_info);
 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
 		host_show_hp_ssd_smart_path_status,
 		host_store_hp_ssd_smart_path_status);
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 95f7ba3c3f1a..517ff203cfde 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -2294,8 +2294,8 @@ static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
 		   lpfc_num_discovered_ports_show, NULL);
 static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
 static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
-static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL);
-static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
+static DEVICE_ATTR_RO(lpfc_drvr_version);
+static DEVICE_ATTR_RO(lpfc_enable_fip);
 static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
 		   lpfc_board_mode_show, lpfc_board_mode_store);
 static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
@@ -2306,12 +2306,11 @@ static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
 static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
 static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
 static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
-static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL);
-static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show, NULL);
-static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show, NULL);
-static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
-static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
-		   lpfc_sriov_hw_max_virtfn_show, NULL);
+static DEVICE_ATTR_RO(lpfc_temp_sensor);
+static DEVICE_ATTR_RO(lpfc_fips_level);
+static DEVICE_ATTR_RO(lpfc_fips_rev);
+static DEVICE_ATTR_RO(lpfc_dss);
+static DEVICE_ATTR_RO(lpfc_sriov_hw_max_virtfn);
 static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
 static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
 		   NULL);
@@ -3719,8 +3718,7 @@ lpfc_static_vport_show(struct device *dev, struct device_attribute *attr,
 /*
  * Sysfs attribute to control the statistical data collection.
  */
-static DEVICE_ATTR(lpfc_static_vport, S_IRUGO,
-		   lpfc_static_vport_show, NULL);
+static DEVICE_ATTR_RO(lpfc_static_vport);
 
 /**
  * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
index a1c81c12718c..4338b8a1309f 100644
--- a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
+++ b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
@@ -158,10 +158,10 @@ static ssize_t dynamic_pool_show(struct device *dev,
 	return ret;
 };
 
-static DEVICE_ATTR(active_bo, 0444, active_bo_show, NULL);
-static DEVICE_ATTR(free_bo, 0444, free_bo_show, NULL);
-static DEVICE_ATTR(reserved_pool, 0444, reserved_pool_show, NULL);
-static DEVICE_ATTR(dynamic_pool, 0444, dynamic_pool_show, NULL);
+static DEVICE_ATTR_RO(active_bo);
+static DEVICE_ATTR_RO(free_bo);
+static DEVICE_ATTR_RO(reserved_pool);
+static DEVICE_ATTR_RO(dynamic_pool);
 
 static struct attribute *sysfs_attrs_ctrl[] = {
 	&dev_attr_active_bo.attr,
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index c008af7fb480..2bc964392924 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -396,10 +396,10 @@ create_s32_tzp_attr(offset);
  * All the attributes created for tzp (create_s32_tzp_attr) also are always
  * present on the sysfs interface.
  */
-static DEVICE_ATTR(type, 0444, type_show, NULL);
-static DEVICE_ATTR(temp, 0444, temp_show, NULL);
+static DEVICE_ATTR_RO(type);
+static DEVICE_ATTR_RO(temp);
 static DEVICE_ATTR_RW(policy);
-static DEVICE_ATTR(available_policies, S_IRUGO, available_policies_show, NULL);
+static DEVICE_ATTR_RO(available_policies);
 static DEVICE_ATTR_RW(sustainable_power);
 
 /* These thermal zone device attributes are created based on conditions */
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 2d392f2d7ffe..9a380e55f4af 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -173,7 +173,7 @@ static ssize_t codec_reg_show(struct device *dev,
 	return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
 }
 
-static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
+static DEVICE_ATTR_RO(codec_reg);
 
 static ssize_t pmdown_time_show(struct device *dev,
 				struct device_attribute *attr, char *buf)
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index a10b21cfc31e..d1977ced895f 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2364,7 +2364,7 @@ static ssize_t dapm_widget_show(struct device *dev,
 	return count;
 }
 
-static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
+static DEVICE_ATTR_RO(dapm_widget);
 
 struct attribute *soc_dapm_dev_attrs[] = {
 	&dev_attr_dapm_widget.attr,
-- 
2.15.0

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Re: [-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Rafael J. Wysocki]

On Tuesday, December 19, 2017 7:15:08 PM CET Joe Perches wrote:
> Convert DEVICE_ATTR uses to DEVICE_ATTR_RO where possible.
> 
> Done with perl script:
> 
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IRUGO\s*|\s*0444\s*)\)?\s*,\s*\1_show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(\1)/g; print;}'
> 
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  arch/arm/mach-pxa/sharpsl_pm.c                       |  4 ++--
>  arch/sh/drivers/push-switch.c                        |  2 +-
>  arch/tile/kernel/sysfs.c                             | 10 +++++-----
>  drivers/acpi/device_sysfs.c                          |  6 +++---
>  drivers/char/ipmi/ipmi_msghandler.c                  | 17 ++++++++---------
>  drivers/gpu/drm/i915/i915_sysfs.c                    |  6 +++---
>  drivers/nvme/host/core.c                             | 10 +++++-----
>  drivers/s390/cio/css.c                               |  8 ++++----
>  drivers/s390/cio/device.c                            |  8 ++++----
>  drivers/s390/crypto/ap_card.c                        |  2 +-
>  drivers/scsi/hpsa.c                                  | 10 +++++-----
>  drivers/scsi/lpfc/lpfc_attr.c                        | 18 ++++++++----------
>  drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c |  8 ++++----
>  drivers/thermal/thermal_sysfs.c                      |  6 +++---
>  sound/soc/soc-core.c                                 |  2 +-
>  sound/soc/soc-dapm.c                                 |  2 +-
>  16 files changed, 58 insertions(+), 61 deletions(-)
> 
> diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-pxa/sharpsl_pm.c
> index 398ba9ba2632..ef9fd9b759cb 100644
> --- a/arch/arm/mach-pxa/sharpsl_pm.c
> +++ b/arch/arm/mach-pxa/sharpsl_pm.c
> @@ -802,8 +802,8 @@ static ssize_t battery_voltage_show(struct device *dev, struct device_attribute
>  	return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage);
>  }
>  
> -static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
> -static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
> +static DEVICE_ATTR_RO(battery_percentage);
> +static DEVICE_ATTR_RO(battery_voltage);
>  
>  extern void (*apm_get_power_status)(struct apm_power_info *);
>  
> diff --git a/arch/sh/drivers/push-switch.c b/arch/sh/drivers/push-switch.c
> index a17181160233..762bc5619910 100644
> --- a/arch/sh/drivers/push-switch.c
> +++ b/arch/sh/drivers/push-switch.c
> @@ -24,7 +24,7 @@ static ssize_t switch_show(struct device *dev,
>  	struct push_switch_platform_info *psw_info = dev->platform_data;
>  	return sprintf(buf, "%s\n", psw_info->name);
>  }
> -static DEVICE_ATTR(switch, S_IRUGO, switch_show, NULL);
> +static DEVICE_ATTR_RO(switch);
>  
>  static void switch_timer(struct timer_list *t)
>  {
> diff --git a/arch/tile/kernel/sysfs.c b/arch/tile/kernel/sysfs.c
> index af5024f0fb5a..b09456a3d77a 100644
> --- a/arch/tile/kernel/sysfs.c
> +++ b/arch/tile/kernel/sysfs.c
> @@ -38,7 +38,7 @@ static ssize_t chip_width_show(struct device *dev,
>  {
>  	return sprintf(page, "%u\n", smp_width);
>  }
> -static DEVICE_ATTR(chip_width, 0444, chip_width_show, NULL);
> +static DEVICE_ATTR_RO(chip_width);
>  
>  static ssize_t chip_height_show(struct device *dev,
>  				struct device_attribute *attr,
> @@ -46,7 +46,7 @@ static ssize_t chip_height_show(struct device *dev,
>  {
>  	return sprintf(page, "%u\n", smp_height);
>  }
> -static DEVICE_ATTR(chip_height, 0444, chip_height_show, NULL);
> +static DEVICE_ATTR_RO(chip_height);
>  
>  static ssize_t chip_serial_show(struct device *dev,
>  				struct device_attribute *attr,
> @@ -54,7 +54,7 @@ static ssize_t chip_serial_show(struct device *dev,
>  {
>  	return get_hv_confstr(page, HV_CONFSTR_CHIP_SERIAL_NUM);
>  }
> -static DEVICE_ATTR(chip_serial, 0444, chip_serial_show, NULL);
> +static DEVICE_ATTR_RO(chip_serial);
>  
>  static ssize_t chip_revision_show(struct device *dev,
>  				  struct device_attribute *attr,
> @@ -62,7 +62,7 @@ static ssize_t chip_revision_show(struct device *dev,
>  {
>  	return get_hv_confstr(page, HV_CONFSTR_CHIP_REV);
>  }
> -static DEVICE_ATTR(chip_revision, 0444, chip_revision_show, NULL);
> +static DEVICE_ATTR_RO(chip_revision);
>  
>  
>  static ssize_t type_show(struct device *dev,
> @@ -71,7 +71,7 @@ static ssize_t type_show(struct device *dev,
>  {
>  	return sprintf(page, "tilera\n");
>  }
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> +static DEVICE_ATTR_RO(type);
>  
>  #define HV_CONF_ATTR(name, conf)					\
>  	static ssize_t name ## _show(struct device *dev,		\
> diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
> index a041689e5701..545e91420cde 100644
> --- a/drivers/acpi/device_sysfs.c
> +++ b/drivers/acpi/device_sysfs.c
> @@ -357,7 +357,7 @@ static ssize_t real_power_state_show(struct device *dev,
>  	return sprintf(buf, "%s\n", acpi_power_state_string(state));
>  }
>  
> -static DEVICE_ATTR(real_power_state, 0444, real_power_state_show, NULL);
> +static DEVICE_ATTR_RO(real_power_state);
>  
>  static ssize_t power_state_show(struct device *dev,
>  				struct device_attribute *attr, char *buf)
> @@ -367,7 +367,7 @@ static ssize_t power_state_show(struct device *dev,
>  	return sprintf(buf, "%s\n", acpi_power_state_string(adev->power.state));
>  }
>  
> -static DEVICE_ATTR(power_state, 0444, power_state_show, NULL);
> +static DEVICE_ATTR_RO(power_state);
>  
>  static ssize_t
>  acpi_eject_store(struct device *d, struct device_attribute *attr,
> @@ -462,7 +462,7 @@ static ssize_t description_show(struct device *dev,
>  
>  	return result;
>  }
> -static DEVICE_ATTR(description, 0444, description_show, NULL);
> +static DEVICE_ATTR_RO(description);
>  
>  static ssize_t
>  acpi_device_sun_show(struct device *dev, struct device_attribute *attr,

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

for this bit.

Thanks!

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Re: [-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Sagi Grimberg]

for the NVMe bits,

Acked-by: Sagi Grimberg <sagi@grimberg.me>

Re: [-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Robert Jarzmik]

"Rafael J. Wysocki" <rjw@rjwysocki.net> writes:

> On Tuesday, December 19, 2017 7:15:08 PM CET Joe Perches wrote:
>> Convert DEVICE_ATTR uses to DEVICE_ATTR_RO where possible.
>> 
>> Done with perl script:
>> 
>> $ git grep -w --name-only DEVICE_ATTR | \
>>   xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IRUGO\s*|\s*0444\s*)\)?\s*,\s*\1_show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(\1)/g; print;}'
>> 
>> Signed-off-by: Joe Perches <joe@perches.com>
>> ---
>>  arch/arm/mach-pxa/sharpsl_pm.c                       |  4 ++--

For mach-pxa:
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>

Cheers.

--
Robert

Re: [-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Zhang Rui]

On Tue, 2017-12-19 at 10:15 -0800, Joe Perches wrote:
> Convert DEVICE_ATTR uses to DEVICE_ATTR_RO where possible.
> 
> Done with perl script:
> 
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) {
> s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IRUGO\s*|\s*0444\s*)\)?
> \s*,\s*\1_show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(\1)/g; print;}'
> 
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  arch/arm/mach-pxa/sharpsl_pm.c                       |  4 ++--
>  arch/sh/drivers/push-switch.c                        |  2 +-
>  arch/tile/kernel/sysfs.c                             | 10 +++++-----
>  drivers/acpi/device_sysfs.c                          |  6 +++---
>  drivers/char/ipmi/ipmi_msghandler.c                  | 17 ++++++++
> ---------
>  drivers/gpu/drm/i915/i915_sysfs.c                    |  6 +++---
>  drivers/nvme/host/core.c                             | 10 +++++-----
>  drivers/s390/cio/css.c                               |  8 ++++----
>  drivers/s390/cio/device.c                            |  8 ++++----
>  drivers/s390/crypto/ap_card.c                        |  2 +-
>  drivers/scsi/hpsa.c                                  | 10 +++++-----
>  drivers/scsi/lpfc/lpfc_attr.c                        | 18 ++++++++
> ----------
>  drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c |  8 ++++----
>  drivers/thermal/thermal_sysfs.c                      |  6 +++---

For the thermal part,
ACK-by: Zhang Rui <rui.zhang@intel.com>

thanks,
rui
>  sound/soc/soc-core.c                                 |  2 +-
>  sound/soc/soc-dapm.c                                 |  2 +-
>  16 files changed, 58 insertions(+), 61 deletions(-)
> 
> diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-
> pxa/sharpsl_pm.c
> index 398ba9ba2632..ef9fd9b759cb 100644
> --- a/arch/arm/mach-pxa/sharpsl_pm.c
> +++ b/arch/arm/mach-pxa/sharpsl_pm.c
> @@ -802,8 +802,8 @@ static ssize_t battery_voltage_show(struct device
> *dev, struct device_attribute
>  	return sprintf(buf, "%d\n",
> sharpsl_pm.battstat.mainbat_voltage);
>  }
>  
> -static DEVICE_ATTR(battery_percentage, 0444,
> battery_percentage_show, NULL);
> -static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show,
> NULL);
> +static DEVICE_ATTR_RO(battery_percentage);
> +static DEVICE_ATTR_RO(battery_voltage);
>  
>  extern void (*apm_get_power_status)(struct apm_power_info *);
>  
> diff --git a/arch/sh/drivers/push-switch.c b/arch/sh/drivers/push-
> switch.c
> index a17181160233..762bc5619910 100644
> --- a/arch/sh/drivers/push-switch.c
> +++ b/arch/sh/drivers/push-switch.c
> @@ -24,7 +24,7 @@ static ssize_t switch_show(struct device *dev,
>  	struct push_switch_platform_info *psw_info = dev-
> >platform_data;
>  	return sprintf(buf, "%s\n", psw_info->name);
>  }
> -static DEVICE_ATTR(switch, S_IRUGO, switch_show, NULL);
> +static DEVICE_ATTR_RO(switch);
>  
>  static void switch_timer(struct timer_list *t)
>  {
> diff --git a/arch/tile/kernel/sysfs.c b/arch/tile/kernel/sysfs.c
> index af5024f0fb5a..b09456a3d77a 100644
> --- a/arch/tile/kernel/sysfs.c
> +++ b/arch/tile/kernel/sysfs.c
> @@ -38,7 +38,7 @@ static ssize_t chip_width_show(struct device *dev,
>  {
>  	return sprintf(page, "%u\n", smp_width);
>  }
> -static DEVICE_ATTR(chip_width, 0444, chip_width_show, NULL);
> +static DEVICE_ATTR_RO(chip_width);
>  
>  static ssize_t chip_height_show(struct device *dev,
>  				struct device_attribute *attr,
> @@ -46,7 +46,7 @@ static ssize_t chip_height_show(struct device *dev,
>  {
>  	return sprintf(page, "%u\n", smp_height);
>  }
> -static DEVICE_ATTR(chip_height, 0444, chip_height_show, NULL);
> +static DEVICE_ATTR_RO(chip_height);
>  
>  static ssize_t chip_serial_show(struct device *dev,
>  				struct device_attribute *attr,
> @@ -54,7 +54,7 @@ static ssize_t chip_serial_show(struct device *dev,
>  {
>  	return get_hv_confstr(page, HV_CONFSTR_CHIP_SERIAL_NUM);
>  }
> -static DEVICE_ATTR(chip_serial, 0444, chip_serial_show, NULL);
> +static DEVICE_ATTR_RO(chip_serial);
>  
>  static ssize_t chip_revision_show(struct device *dev,
>  				  struct device_attribute *attr,
> @@ -62,7 +62,7 @@ static ssize_t chip_revision_show(struct device
> *dev,
>  {
>  	return get_hv_confstr(page, HV_CONFSTR_CHIP_REV);
>  }
> -static DEVICE_ATTR(chip_revision, 0444, chip_revision_show, NULL);
> +static DEVICE_ATTR_RO(chip_revision);
>  
>  
>  static ssize_t type_show(struct device *dev,
> @@ -71,7 +71,7 @@ static ssize_t type_show(struct device *dev,
>  {
>  	return sprintf(page, "tilera\n");
>  }
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> +static DEVICE_ATTR_RO(type);
>  
>  #define HV_CONF_ATTR(name, conf)					
> \
>  	static ssize_t name ## _show(struct device *dev,		
> \
> diff --git a/drivers/acpi/device_sysfs.c
> b/drivers/acpi/device_sysfs.c
> index a041689e5701..545e91420cde 100644
> --- a/drivers/acpi/device_sysfs.c
> +++ b/drivers/acpi/device_sysfs.c
> @@ -357,7 +357,7 @@ static ssize_t real_power_state_show(struct
> device *dev,
>  	return sprintf(buf, "%s\n", acpi_power_state_string(state));
>  }
>  
> -static DEVICE_ATTR(real_power_state, 0444, real_power_state_show,
> NULL);
> +static DEVICE_ATTR_RO(real_power_state);
>  
>  static ssize_t power_state_show(struct device *dev,
>  				struct device_attribute *attr, char
> *buf)
> @@ -367,7 +367,7 @@ static ssize_t power_state_show(struct device
> *dev,
>  	return sprintf(buf, "%s\n", acpi_power_state_string(adev-
> >power.state));
>  }
>  
> -static DEVICE_ATTR(power_state, 0444, power_state_show, NULL);
> +static DEVICE_ATTR_RO(power_state);
>  
>  static ssize_t
>  acpi_eject_store(struct device *d, struct device_attribute *attr,
> @@ -462,7 +462,7 @@ static ssize_t description_show(struct device
> *dev,
>  
>  	return result;
>  }
> -static DEVICE_ATTR(description, 0444, description_show, NULL);
> +static DEVICE_ATTR_RO(description);
>  
>  static ssize_t
>  acpi_device_sun_show(struct device *dev, struct device_attribute
> *attr,
> diff --git a/drivers/char/ipmi/ipmi_msghandler.c
> b/drivers/char/ipmi/ipmi_msghandler.c
> index f45732a2cb3e..7f51acd74e10 100644
> --- a/drivers/char/ipmi/ipmi_msghandler.c
> +++ b/drivers/char/ipmi/ipmi_msghandler.c
> @@ -2588,7 +2588,7 @@ static ssize_t device_id_show(struct device
> *dev,
>  
>  	return snprintf(buf, 10, "%u\n", id.device_id);
>  }
> -static DEVICE_ATTR(device_id, S_IRUGO, device_id_show, NULL);
> +static DEVICE_ATTR_RO(device_id);
>  
>  static ssize_t provides_device_sdrs_show(struct device *dev,
>  					 struct device_attribute
> *attr,
> @@ -2604,8 +2604,7 @@ static ssize_t provides_device_sdrs_show(struct
> device *dev,
>  
>  	return snprintf(buf, 10, "%u\n", (id.device_revision & 0x80)
> >> 7);
>  }
> -static DEVICE_ATTR(provides_device_sdrs, S_IRUGO,
> provides_device_sdrs_show,
> -		   NULL);
> +static DEVICE_ATTR_RO(provides_device_sdrs);
>  
>  static ssize_t revision_show(struct device *dev, struct
> device_attribute *attr,
>  			     char *buf)
> @@ -2620,7 +2619,7 @@ static ssize_t revision_show(struct device
> *dev, struct device_attribute *attr,
>  
>  	return snprintf(buf, 20, "%u\n", id.device_revision & 0x0F);
>  }
> -static DEVICE_ATTR(revision, S_IRUGO, revision_show, NULL);
> +static DEVICE_ATTR_RO(revision);
>  
>  static ssize_t firmware_revision_show(struct device *dev,
>  				      struct device_attribute *attr,
> @@ -2637,7 +2636,7 @@ static ssize_t firmware_revision_show(struct
> device *dev,
>  	return snprintf(buf, 20, "%u.%x\n", id.firmware_revision_1,
>  			id.firmware_revision_2);
>  }
> -static DEVICE_ATTR(firmware_revision, S_IRUGO,
> firmware_revision_show, NULL);
> +static DEVICE_ATTR_RO(firmware_revision);
>  
>  static ssize_t ipmi_version_show(struct device *dev,
>  				 struct device_attribute *attr,
> @@ -2655,7 +2654,7 @@ static ssize_t ipmi_version_show(struct device
> *dev,
>  			ipmi_version_major(&id),
>  			ipmi_version_minor(&id));
>  }
> -static DEVICE_ATTR(ipmi_version, S_IRUGO, ipmi_version_show, NULL);
> +static DEVICE_ATTR_RO(ipmi_version);
>  
>  static ssize_t add_dev_support_show(struct device *dev,
>  				    struct device_attribute *attr,
> @@ -2688,7 +2687,7 @@ static ssize_t manufacturer_id_show(struct
> device *dev,
>  
>  	return snprintf(buf, 20, "0x%6.6x\n", id.manufacturer_id);
>  }
> -static DEVICE_ATTR(manufacturer_id, S_IRUGO, manufacturer_id_show,
> NULL);
> +static DEVICE_ATTR_RO(manufacturer_id);
>  
>  static ssize_t product_id_show(struct device *dev,
>  			       struct device_attribute *attr,
> @@ -2704,7 +2703,7 @@ static ssize_t product_id_show(struct device
> *dev,
>  
>  	return snprintf(buf, 10, "0x%4.4x\n", id.product_id);
>  }
> -static DEVICE_ATTR(product_id, S_IRUGO, product_id_show, NULL);
> +static DEVICE_ATTR_RO(product_id);
>  
>  static ssize_t aux_firmware_rev_show(struct device *dev,
>  				     struct device_attribute *attr,
> @@ -2742,7 +2741,7 @@ static ssize_t guid_show(struct device *dev,
> struct device_attribute *attr,
>  
>  	return snprintf(buf, 38, "%pUl\n", guid.b);
>  }
> -static DEVICE_ATTR(guid, S_IRUGO, guid_show, NULL);
> +static DEVICE_ATTR_RO(guid);
>  
>  static struct attribute *bmc_dev_attrs[] = {
>  	&dev_attr_device_id.attr,
> diff --git a/drivers/gpu/drm/i915/i915_sysfs.c
> b/drivers/gpu/drm/i915/i915_sysfs.c
> index 1d0ab8ff5915..b33d2158c234 100644
> --- a/drivers/gpu/drm/i915/i915_sysfs.c
> +++ b/drivers/gpu/drm/i915/i915_sysfs.c
> @@ -445,13 +445,13 @@ static ssize_t gt_min_freq_mhz_store(struct
> device *kdev,
>  	return ret ?: count;
>  }
>  
> -static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show,
> NULL);
> -static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show,
> NULL);
> +static DEVICE_ATTR_RO(gt_act_freq_mhz);
> +static DEVICE_ATTR_RO(gt_cur_freq_mhz);
>  static DEVICE_ATTR_RW(gt_boost_freq_mhz);
>  static DEVICE_ATTR_RW(gt_max_freq_mhz);
>  static DEVICE_ATTR_RW(gt_min_freq_mhz);
>  
> -static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show,
> NULL);
> +static DEVICE_ATTR_RO(vlv_rpe_freq_mhz);
>  
>  static ssize_t gt_rp_mhz_show(struct device *kdev, struct
> device_attribute *attr, char *buf);
>  static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL);
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index 63691e251f8c..8f9fa6f1dfb4 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2516,14 +2516,14 @@ static ssize_t wwid_show(struct device *dev,
> struct device_attribute *attr,
>  		serial_len, subsys->serial, model_len, subsys-
> >model,
>  		head->ns_id);
>  }
> -static DEVICE_ATTR(wwid, S_IRUGO, wwid_show, NULL);
> +static DEVICE_ATTR_RO(wwid);
>  
>  static ssize_t nguid_show(struct device *dev, struct
> device_attribute *attr,
>  		char *buf)
>  {
>  	return sprintf(buf, "%pU\n", dev_to_ns_head(dev)-
> >ids.nguid);
>  }
> -static DEVICE_ATTR(nguid, S_IRUGO, nguid_show, NULL);
> +static DEVICE_ATTR_RO(nguid);
>  
>  static ssize_t uuid_show(struct device *dev, struct device_attribute
> *attr,
>  		char *buf)
> @@ -2540,21 +2540,21 @@ static ssize_t uuid_show(struct device *dev,
> struct device_attribute *attr,
>  	}
>  	return sprintf(buf, "%pU\n", &ids->uuid);
>  }
> -static DEVICE_ATTR(uuid, S_IRUGO, uuid_show, NULL);
> +static DEVICE_ATTR_RO(uuid);
>  
>  static ssize_t eui_show(struct device *dev, struct device_attribute
> *attr,
>  		char *buf)
>  {
>  	return sprintf(buf, "%8ph\n", dev_to_ns_head(dev)-
> >ids.eui64);
>  }
> -static DEVICE_ATTR(eui, S_IRUGO, eui_show, NULL);
> +static DEVICE_ATTR_RO(eui);
>  
>  static ssize_t nsid_show(struct device *dev, struct device_attribute
> *attr,
>  		char *buf)
>  {
>  	return sprintf(buf, "%d\n", dev_to_ns_head(dev)->ns_id);
>  }
> -static DEVICE_ATTR(nsid, S_IRUGO, nsid_show, NULL);
> +static DEVICE_ATTR_RO(nsid);
>  
>  static struct attribute *nvme_ns_id_attrs[] = {
>  	&dev_attr_wwid.attr,
> diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
> index 0f11dce6e224..9263a0fb3858 100644
> --- a/drivers/s390/cio/css.c
> +++ b/drivers/s390/cio/css.c
> @@ -268,7 +268,7 @@ static ssize_t type_show(struct device *dev,
> struct device_attribute *attr,
>  	return sprintf(buf, "%01x\n", sch->st);
>  }
>  
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> +static DEVICE_ATTR_RO(type);
>  
>  static ssize_t modalias_show(struct device *dev, struct
> device_attribute *attr,
>  			     char *buf)
> @@ -278,7 +278,7 @@ static ssize_t modalias_show(struct device *dev,
> struct device_attribute *attr,
>  	return sprintf(buf, "css:t%01X\n", sch->st);
>  }
>  
> -static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
> +static DEVICE_ATTR_RO(modalias);
>  
>  static struct attribute *subch_attrs[] = {
>  	&dev_attr_type.attr,
> @@ -315,7 +315,7 @@ static ssize_t chpids_show(struct device *dev,
>  	ret += sprintf(buf + ret, "\n");
>  	return ret;
>  }
> -static DEVICE_ATTR(chpids, 0444, chpids_show, NULL);
> +static DEVICE_ATTR_RO(chpids);
>  
>  static ssize_t pimpampom_show(struct device *dev,
>  			      struct device_attribute *attr,
> @@ -327,7 +327,7 @@ static ssize_t pimpampom_show(struct device *dev,
>  	return sprintf(buf, "%02x %02x %02x\n",
>  		       pmcw->pim, pmcw->pam, pmcw->pom);
>  }
> -static DEVICE_ATTR(pimpampom, 0444, pimpampom_show, NULL);
> +static DEVICE_ATTR_RO(pimpampom);
>  
>  static struct attribute *io_subchannel_type_attrs[] = {
>  	&dev_attr_chpids.attr,
> diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
> index 6eefb67b31f3..f50ea035aa9b 100644
> --- a/drivers/s390/cio/device.c
> +++ b/drivers/s390/cio/device.c
> @@ -597,13 +597,13 @@ static ssize_t vpm_show(struct device *dev,
> struct device_attribute *attr,
>  	return sprintf(buf, "%02x\n", sch->vpm);
>  }
>  
> -static DEVICE_ATTR(devtype, 0444, devtype_show, NULL);
> -static DEVICE_ATTR(cutype, 0444, cutype_show, NULL);
> -static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
> +static DEVICE_ATTR_RO(devtype);
> +static DEVICE_ATTR_RO(cutype);
> +static DEVICE_ATTR_RO(modalias);
>  static DEVICE_ATTR_RW(online);
>  static DEVICE_ATTR(availability, 0444, available_show, NULL);
>  static DEVICE_ATTR(logging, 0200, NULL, initiate_logging);
> -static DEVICE_ATTR(vpm, 0444, vpm_show, NULL);
> +static DEVICE_ATTR_RO(vpm);
>  
>  static struct attribute *io_subchannel_attrs[] = {
>  	&dev_attr_logging.attr,
> diff --git a/drivers/s390/crypto/ap_card.c
> b/drivers/s390/crypto/ap_card.c
> index 97a8cf578116..2c726df210f6 100644
> --- a/drivers/s390/crypto/ap_card.c
> +++ b/drivers/s390/crypto/ap_card.c
> @@ -57,7 +57,7 @@ static ssize_t ap_functions_show(struct device
> *dev,
>  	return snprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions);
>  }
>  
> -static DEVICE_ATTR(ap_functions, 0444, ap_functions_show, NULL);
> +static DEVICE_ATTR_RO(ap_functions);
>  
>  static ssize_t ap_req_count_show(struct device *dev,
>  				 struct device_attribute *attr,
> diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
> index b0aa5dc1d54c..d62377b68ef4 100644
> --- a/drivers/scsi/hpsa.c
> +++ b/drivers/scsi/hpsa.c
> @@ -901,14 +901,14 @@ static ssize_t host_show_legacy_board(struct
> device *dev,
>  	return snprintf(buf, 20, "%d\n", h->legacy_board ? 1 : 0);
>  }
>  
> -static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
> -static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
> -static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
> +static DEVICE_ATTR_RO(raid_level);
> +static DEVICE_ATTR_RO(lunid);
> +static DEVICE_ATTR_RO(unique_id);
>  static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
> -static DEVICE_ATTR(sas_address, S_IRUGO, sas_address_show, NULL);
> +static DEVICE_ATTR_RO(sas_address);
>  static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
>  			host_show_hp_ssd_smart_path_enabled, NULL);
> -static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
> +static DEVICE_ATTR_RO(path_info);
>  static DEVICE_ATTR(hp_ssd_smart_path_status,
> S_IWUSR|S_IRUGO|S_IROTH,
>  		host_show_hp_ssd_smart_path_status,
>  		host_store_hp_ssd_smart_path_status);
> diff --git a/drivers/scsi/lpfc/lpfc_attr.c
> b/drivers/scsi/lpfc/lpfc_attr.c
> index 95f7ba3c3f1a..517ff203cfde 100644
> --- a/drivers/scsi/lpfc/lpfc_attr.c
> +++ b/drivers/scsi/lpfc/lpfc_attr.c
> @@ -2294,8 +2294,8 @@ static DEVICE_ATTR(num_discovered_ports,
> S_IRUGO,
>  		   lpfc_num_discovered_ports_show, NULL);
>  static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show,
> NULL);
>  static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show,
> NULL);
> -static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO,
> lpfc_drvr_version_show, NULL);
> -static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show,
> NULL);
> +static DEVICE_ATTR_RO(lpfc_drvr_version);
> +static DEVICE_ATTR_RO(lpfc_enable_fip);
>  static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
>  		   lpfc_board_mode_show, lpfc_board_mode_store);
>  static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
> @@ -2306,12 +2306,11 @@ static DEVICE_ATTR(used_rpi, S_IRUGO,
> lpfc_used_rpi_show, NULL);
>  static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
>  static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
>  static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
> -static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show,
> NULL);
> -static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show,
> NULL);
> -static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show,
> NULL);
> -static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
> -static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
> -		   lpfc_sriov_hw_max_virtfn_show, NULL);
> +static DEVICE_ATTR_RO(lpfc_temp_sensor);
> +static DEVICE_ATTR_RO(lpfc_fips_level);
> +static DEVICE_ATTR_RO(lpfc_fips_rev);
> +static DEVICE_ATTR_RO(lpfc_dss);
> +static DEVICE_ATTR_RO(lpfc_sriov_hw_max_virtfn);
>  static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show,
> NULL);
>  static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO,
> lpfc_oas_supported_show,
>  		   NULL);
> @@ -3719,8 +3718,7 @@ lpfc_static_vport_show(struct device *dev,
> struct device_attribute *attr,
>  /*
>   * Sysfs attribute to control the statistical data collection.
>   */
> -static DEVICE_ATTR(lpfc_static_vport, S_IRUGO,
> -		   lpfc_static_vport_show, NULL);
> +static DEVICE_ATTR_RO(lpfc_static_vport);
>  
>  /**
>   * lpfc_stat_data_ctrl_store - write call back for
> lpfc_stat_data_ctrl sysfs file
> diff --git a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> index a1c81c12718c..4338b8a1309f 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> @@ -158,10 +158,10 @@ static ssize_t dynamic_pool_show(struct device
> *dev,
>  	return ret;
>  };
>  
> -static DEVICE_ATTR(active_bo, 0444, active_bo_show, NULL);
> -static DEVICE_ATTR(free_bo, 0444, free_bo_show, NULL);
> -static DEVICE_ATTR(reserved_pool, 0444, reserved_pool_show, NULL);
> -static DEVICE_ATTR(dynamic_pool, 0444, dynamic_pool_show, NULL);
> +static DEVICE_ATTR_RO(active_bo);
> +static DEVICE_ATTR_RO(free_bo);
> +static DEVICE_ATTR_RO(reserved_pool);
> +static DEVICE_ATTR_RO(dynamic_pool);
>  
>  static struct attribute *sysfs_attrs_ctrl[] = {
>  	&dev_attr_active_bo.attr,
> diff --git a/drivers/thermal/thermal_sysfs.c
> b/drivers/thermal/thermal_sysfs.c
> index c008af7fb480..2bc964392924 100644
> --- a/drivers/thermal/thermal_sysfs.c
> +++ b/drivers/thermal/thermal_sysfs.c
> @@ -396,10 +396,10 @@ create_s32_tzp_attr(offset);
>   * All the attributes created for tzp (create_s32_tzp_attr) also are
> always
>   * present on the sysfs interface.
>   */
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> +static DEVICE_ATTR_RO(type);
> +static DEVICE_ATTR_RO(temp);
>  static DEVICE_ATTR_RW(policy);
> -static DEVICE_ATTR(available_policies, S_IRUGO,
> available_policies_show, NULL);
> +static DEVICE_ATTR_RO(available_policies);
>  static DEVICE_ATTR_RW(sustainable_power);
>  
>  /* These thermal zone device attributes are created based on
> conditions */
> diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
> index 2d392f2d7ffe..9a380e55f4af 100644
> --- a/sound/soc/soc-core.c
> +++ b/sound/soc/soc-core.c
> @@ -173,7 +173,7 @@ static ssize_t codec_reg_show(struct device *dev,
>  	return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
>  }
>  
> -static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
> +static DEVICE_ATTR_RO(codec_reg);
>  
>  static ssize_t pmdown_time_show(struct device *dev,
>  				struct device_attribute *attr, char
> *buf)
> diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
> index a10b21cfc31e..d1977ced895f 100644
> --- a/sound/soc/soc-dapm.c
> +++ b/sound/soc/soc-dapm.c
> @@ -2364,7 +2364,7 @@ static ssize_t dapm_widget_show(struct device
> *dev,
>  	return count;
>  }
>  
> -static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
> +static DEVICE_ATTR_RO(dapm_widget);
>  
>  struct attribute *soc_dapm_dev_attrs[] = {
>  	&dev_attr_dapm_widget.attr,
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Re: [-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Harald Freudenberger]

[-- Attachment #1.1: Type: text/plain, Size: 20837 bytes --]

On 12/19/2017 07:15 PM, Joe Perches wrote:

> Convert DEVICE_ATTR uses to DEVICE_ATTR_RO where possible.
>
> Done with perl script:
>
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IRUGO\s*|\s*0444\s*)\)?\s*,\s*\1_show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(\1)/g; print;}'
>
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  arch/arm/mach-pxa/sharpsl_pm.c                       |  4 ++--
>  arch/sh/drivers/push-switch.c                        |  2 +-
>  arch/tile/kernel/sysfs.c                             | 10 +++++-----
>  drivers/acpi/device_sysfs.c                          |  6 +++---
>  drivers/char/ipmi/ipmi_msghandler.c                  | 17 ++++++++---------
>  drivers/gpu/drm/i915/i915_sysfs.c                    |  6 +++---
>  drivers/nvme/host/core.c                             | 10 +++++-----
>  drivers/s390/cio/css.c                               |  8 ++++----
>  drivers/s390/cio/device.c                            |  8 ++++----
>  drivers/s390/crypto/ap_card.c                        |  2 +-

For the s390 AP part,

ACK-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Thanks

>  drivers/scsi/hpsa.c                                  | 10 +++++-----
>  drivers/scsi/lpfc/lpfc_attr.c                        | 18 ++++++++----------
>  drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c |  8 ++++----
>  drivers/thermal/thermal_sysfs.c                      |  6 +++---
>  sound/soc/soc-core.c                                 |  2 +-
>  sound/soc/soc-dapm.c                                 |  2 +-
>  16 files changed, 58 insertions(+), 61 deletions(-)
>
> diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-pxa/sharpsl_pm.c
> index 398ba9ba2632..ef9fd9b759cb 100644
> --- a/arch/arm/mach-pxa/sharpsl_pm.c
> +++ b/arch/arm/mach-pxa/sharpsl_pm.c
> @@ -802,8 +802,8 @@ static ssize_t battery_voltage_show(struct device *dev, struct device_attribute
>  	return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage);
>  }
>
> -static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
> -static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
> +static DEVICE_ATTR_RO(battery_percentage);
> +static DEVICE_ATTR_RO(battery_voltage);
>
>  extern void (*apm_get_power_status)(struct apm_power_info *);
>
> diff --git a/arch/sh/drivers/push-switch.c b/arch/sh/drivers/push-switch.c
> index a17181160233..762bc5619910 100644
> --- a/arch/sh/drivers/push-switch.c
> +++ b/arch/sh/drivers/push-switch.c
> @@ -24,7 +24,7 @@ static ssize_t switch_show(struct device *dev,
>  	struct push_switch_platform_info *psw_info = dev->platform_data;
>  	return sprintf(buf, "%s\n", psw_info->name);
>  }
> -static DEVICE_ATTR(switch, S_IRUGO, switch_show, NULL);
> +static DEVICE_ATTR_RO(switch);
>
>  static void switch_timer(struct timer_list *t)
>  {
> diff --git a/arch/tile/kernel/sysfs.c b/arch/tile/kernel/sysfs.c
> index af5024f0fb5a..b09456a3d77a 100644
> --- a/arch/tile/kernel/sysfs.c
> +++ b/arch/tile/kernel/sysfs.c
> @@ -38,7 +38,7 @@ static ssize_t chip_width_show(struct device *dev,
>  {
>  	return sprintf(page, "%u\n", smp_width);
>  }
> -static DEVICE_ATTR(chip_width, 0444, chip_width_show, NULL);
> +static DEVICE_ATTR_RO(chip_width);
>
>  static ssize_t chip_height_show(struct device *dev,
>  				struct device_attribute *attr,
> @@ -46,7 +46,7 @@ static ssize_t chip_height_show(struct device *dev,
>  {
>  	return sprintf(page, "%u\n", smp_height);
>  }
> -static DEVICE_ATTR(chip_height, 0444, chip_height_show, NULL);
> +static DEVICE_ATTR_RO(chip_height);
>
>  static ssize_t chip_serial_show(struct device *dev,
>  				struct device_attribute *attr,
> @@ -54,7 +54,7 @@ static ssize_t chip_serial_show(struct device *dev,
>  {
>  	return get_hv_confstr(page, HV_CONFSTR_CHIP_SERIAL_NUM);
>  }
> -static DEVICE_ATTR(chip_serial, 0444, chip_serial_show, NULL);
> +static DEVICE_ATTR_RO(chip_serial);
>
>  static ssize_t chip_revision_show(struct device *dev,
>  				  struct device_attribute *attr,
> @@ -62,7 +62,7 @@ static ssize_t chip_revision_show(struct device *dev,
>  {
>  	return get_hv_confstr(page, HV_CONFSTR_CHIP_REV);
>  }
> -static DEVICE_ATTR(chip_revision, 0444, chip_revision_show, NULL);
> +static DEVICE_ATTR_RO(chip_revision);
>
>
>  static ssize_t type_show(struct device *dev,
> @@ -71,7 +71,7 @@ static ssize_t type_show(struct device *dev,
>  {
>  	return sprintf(page, "tilera\n");
>  }
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> +static DEVICE_ATTR_RO(type);
>
>  #define HV_CONF_ATTR(name, conf)					\
>  	static ssize_t name ## _show(struct device *dev,		\
> diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
> index a041689e5701..545e91420cde 100644
> --- a/drivers/acpi/device_sysfs.c
> +++ b/drivers/acpi/device_sysfs.c
> @@ -357,7 +357,7 @@ static ssize_t real_power_state_show(struct device *dev,
>  	return sprintf(buf, "%s\n", acpi_power_state_string(state));
>  }
>
> -static DEVICE_ATTR(real_power_state, 0444, real_power_state_show, NULL);
> +static DEVICE_ATTR_RO(real_power_state);
>
>  static ssize_t power_state_show(struct device *dev,
>  				struct device_attribute *attr, char *buf)
> @@ -367,7 +367,7 @@ static ssize_t power_state_show(struct device *dev,
>  	return sprintf(buf, "%s\n", acpi_power_state_string(adev->power.state));
>  }
>
> -static DEVICE_ATTR(power_state, 0444, power_state_show, NULL);
> +static DEVICE_ATTR_RO(power_state);
>
>  static ssize_t
>  acpi_eject_store(struct device *d, struct device_attribute *attr,
> @@ -462,7 +462,7 @@ static ssize_t description_show(struct device *dev,
>
>  	return result;
>  }
> -static DEVICE_ATTR(description, 0444, description_show, NULL);
> +static DEVICE_ATTR_RO(description);
>
>  static ssize_t
>  acpi_device_sun_show(struct device *dev, struct device_attribute *attr,
> diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
> index f45732a2cb3e..7f51acd74e10 100644
> --- a/drivers/char/ipmi/ipmi_msghandler.c
> +++ b/drivers/char/ipmi/ipmi_msghandler.c
> @@ -2588,7 +2588,7 @@ static ssize_t device_id_show(struct device *dev,
>
>  	return snprintf(buf, 10, "%u\n", id.device_id);
>  }
> -static DEVICE_ATTR(device_id, S_IRUGO, device_id_show, NULL);
> +static DEVICE_ATTR_RO(device_id);
>
>  static ssize_t provides_device_sdrs_show(struct device *dev,
>  					 struct device_attribute *attr,
> @@ -2604,8 +2604,7 @@ static ssize_t provides_device_sdrs_show(struct device *dev,
>
>  	return snprintf(buf, 10, "%u\n", (id.device_revision & 0x80) >> 7);
>  }
> -static DEVICE_ATTR(provides_device_sdrs, S_IRUGO, provides_device_sdrs_show,
> -		   NULL);
> +static DEVICE_ATTR_RO(provides_device_sdrs);
>
>  static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
>  			     char *buf)
> @@ -2620,7 +2619,7 @@ static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
>
>  	return snprintf(buf, 20, "%u\n", id.device_revision & 0x0F);
>  }
> -static DEVICE_ATTR(revision, S_IRUGO, revision_show, NULL);
> +static DEVICE_ATTR_RO(revision);
>
>  static ssize_t firmware_revision_show(struct device *dev,
>  				      struct device_attribute *attr,
> @@ -2637,7 +2636,7 @@ static ssize_t firmware_revision_show(struct device *dev,
>  	return snprintf(buf, 20, "%u.%x\n", id.firmware_revision_1,
>  			id.firmware_revision_2);
>  }
> -static DEVICE_ATTR(firmware_revision, S_IRUGO, firmware_revision_show, NULL);
> +static DEVICE_ATTR_RO(firmware_revision);
>
>  static ssize_t ipmi_version_show(struct device *dev,
>  				 struct device_attribute *attr,
> @@ -2655,7 +2654,7 @@ static ssize_t ipmi_version_show(struct device *dev,
>  			ipmi_version_major(&id),
>  			ipmi_version_minor(&id));
>  }
> -static DEVICE_ATTR(ipmi_version, S_IRUGO, ipmi_version_show, NULL);
> +static DEVICE_ATTR_RO(ipmi_version);
>
>  static ssize_t add_dev_support_show(struct device *dev,
>  				    struct device_attribute *attr,
> @@ -2688,7 +2687,7 @@ static ssize_t manufacturer_id_show(struct device *dev,
>
>  	return snprintf(buf, 20, "0x%6.6x\n", id.manufacturer_id);
>  }
> -static DEVICE_ATTR(manufacturer_id, S_IRUGO, manufacturer_id_show, NULL);
> +static DEVICE_ATTR_RO(manufacturer_id);
>
>  static ssize_t product_id_show(struct device *dev,
>  			       struct device_attribute *attr,
> @@ -2704,7 +2703,7 @@ static ssize_t product_id_show(struct device *dev,
>
>  	return snprintf(buf, 10, "0x%4.4x\n", id.product_id);
>  }
> -static DEVICE_ATTR(product_id, S_IRUGO, product_id_show, NULL);
> +static DEVICE_ATTR_RO(product_id);
>
>  static ssize_t aux_firmware_rev_show(struct device *dev,
>  				     struct device_attribute *attr,
> @@ -2742,7 +2741,7 @@ static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
>
>  	return snprintf(buf, 38, "%pUl\n", guid.b);
>  }
> -static DEVICE_ATTR(guid, S_IRUGO, guid_show, NULL);
> +static DEVICE_ATTR_RO(guid);
>
>  static struct attribute *bmc_dev_attrs[] = {
>  	&dev_attr_device_id.attr,
> diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
> index 1d0ab8ff5915..b33d2158c234 100644
> --- a/drivers/gpu/drm/i915/i915_sysfs.c
> +++ b/drivers/gpu/drm/i915/i915_sysfs.c
> @@ -445,13 +445,13 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
>  	return ret ?: count;
>  }
>
> -static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL);
> -static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL);
> +static DEVICE_ATTR_RO(gt_act_freq_mhz);
> +static DEVICE_ATTR_RO(gt_cur_freq_mhz);
>  static DEVICE_ATTR_RW(gt_boost_freq_mhz);
>  static DEVICE_ATTR_RW(gt_max_freq_mhz);
>  static DEVICE_ATTR_RW(gt_min_freq_mhz);
>
> -static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show, NULL);
> +static DEVICE_ATTR_RO(vlv_rpe_freq_mhz);
>
>  static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf);
>  static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL);
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index 63691e251f8c..8f9fa6f1dfb4 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2516,14 +2516,14 @@ static ssize_t wwid_show(struct device *dev, struct device_attribute *attr,
>  		serial_len, subsys->serial, model_len, subsys->model,
>  		head->ns_id);
>  }
> -static DEVICE_ATTR(wwid, S_IRUGO, wwid_show, NULL);
> +static DEVICE_ATTR_RO(wwid);
>
>  static ssize_t nguid_show(struct device *dev, struct device_attribute *attr,
>  		char *buf)
>  {
>  	return sprintf(buf, "%pU\n", dev_to_ns_head(dev)->ids.nguid);
>  }
> -static DEVICE_ATTR(nguid, S_IRUGO, nguid_show, NULL);
> +static DEVICE_ATTR_RO(nguid);
>
>  static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
>  		char *buf)
> @@ -2540,21 +2540,21 @@ static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
>  	}
>  	return sprintf(buf, "%pU\n", &ids->uuid);
>  }
> -static DEVICE_ATTR(uuid, S_IRUGO, uuid_show, NULL);
> +static DEVICE_ATTR_RO(uuid);
>
>  static ssize_t eui_show(struct device *dev, struct device_attribute *attr,
>  		char *buf)
>  {
>  	return sprintf(buf, "%8ph\n", dev_to_ns_head(dev)->ids.eui64);
>  }
> -static DEVICE_ATTR(eui, S_IRUGO, eui_show, NULL);
> +static DEVICE_ATTR_RO(eui);
>
>  static ssize_t nsid_show(struct device *dev, struct device_attribute *attr,
>  		char *buf)
>  {
>  	return sprintf(buf, "%d\n", dev_to_ns_head(dev)->ns_id);
>  }
> -static DEVICE_ATTR(nsid, S_IRUGO, nsid_show, NULL);
> +static DEVICE_ATTR_RO(nsid);
>
>  static struct attribute *nvme_ns_id_attrs[] = {
>  	&dev_attr_wwid.attr,
> diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
> index 0f11dce6e224..9263a0fb3858 100644
> --- a/drivers/s390/cio/css.c
> +++ b/drivers/s390/cio/css.c
> @@ -268,7 +268,7 @@ static ssize_t type_show(struct device *dev, struct device_attribute *attr,
>  	return sprintf(buf, "%01x\n", sch->st);
>  }
>
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> +static DEVICE_ATTR_RO(type);
>
>  static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
>  			     char *buf)
> @@ -278,7 +278,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
>  	return sprintf(buf, "css:t%01X\n", sch->st);
>  }
>
> -static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
> +static DEVICE_ATTR_RO(modalias);
>
>  static struct attribute *subch_attrs[] = {
>  	&dev_attr_type.attr,
> @@ -315,7 +315,7 @@ static ssize_t chpids_show(struct device *dev,
>  	ret += sprintf(buf + ret, "\n");
>  	return ret;
>  }
> -static DEVICE_ATTR(chpids, 0444, chpids_show, NULL);
> +static DEVICE_ATTR_RO(chpids);
>
>  static ssize_t pimpampom_show(struct device *dev,
>  			      struct device_attribute *attr,
> @@ -327,7 +327,7 @@ static ssize_t pimpampom_show(struct device *dev,
>  	return sprintf(buf, "%02x %02x %02x\n",
>  		       pmcw->pim, pmcw->pam, pmcw->pom);
>  }
> -static DEVICE_ATTR(pimpampom, 0444, pimpampom_show, NULL);
> +static DEVICE_ATTR_RO(pimpampom);
>
>  static struct attribute *io_subchannel_type_attrs[] = {
>  	&dev_attr_chpids.attr,
> diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
> index 6eefb67b31f3..f50ea035aa9b 100644
> --- a/drivers/s390/cio/device.c
> +++ b/drivers/s390/cio/device.c
> @@ -597,13 +597,13 @@ static ssize_t vpm_show(struct device *dev, struct device_attribute *attr,
>  	return sprintf(buf, "%02x\n", sch->vpm);
>  }
>
> -static DEVICE_ATTR(devtype, 0444, devtype_show, NULL);
> -static DEVICE_ATTR(cutype, 0444, cutype_show, NULL);
> -static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);
> +static DEVICE_ATTR_RO(devtype);
> +static DEVICE_ATTR_RO(cutype);
> +static DEVICE_ATTR_RO(modalias);
>  static DEVICE_ATTR_RW(online);
>  static DEVICE_ATTR(availability, 0444, available_show, NULL);
>  static DEVICE_ATTR(logging, 0200, NULL, initiate_logging);
> -static DEVICE_ATTR(vpm, 0444, vpm_show, NULL);
> +static DEVICE_ATTR_RO(vpm);
>
>  static struct attribute *io_subchannel_attrs[] = {
>  	&dev_attr_logging.attr,
> diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c
> index 97a8cf578116..2c726df210f6 100644
> --- a/drivers/s390/crypto/ap_card.c
> +++ b/drivers/s390/crypto/ap_card.c
> @@ -57,7 +57,7 @@ static ssize_t ap_functions_show(struct device *dev,
>  	return snprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions);
>  }
>
> -static DEVICE_ATTR(ap_functions, 0444, ap_functions_show, NULL);
> +static DEVICE_ATTR_RO(ap_functions);
>
>  static ssize_t ap_req_count_show(struct device *dev,
>  				 struct device_attribute *attr,
> diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
> index b0aa5dc1d54c..d62377b68ef4 100644
> --- a/drivers/scsi/hpsa.c
> +++ b/drivers/scsi/hpsa.c
> @@ -901,14 +901,14 @@ static ssize_t host_show_legacy_board(struct device *dev,
>  	return snprintf(buf, 20, "%d\n", h->legacy_board ? 1 : 0);
>  }
>
> -static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
> -static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
> -static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
> +static DEVICE_ATTR_RO(raid_level);
> +static DEVICE_ATTR_RO(lunid);
> +static DEVICE_ATTR_RO(unique_id);
>  static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
> -static DEVICE_ATTR(sas_address, S_IRUGO, sas_address_show, NULL);
> +static DEVICE_ATTR_RO(sas_address);
>  static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
>  			host_show_hp_ssd_smart_path_enabled, NULL);
> -static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
> +static DEVICE_ATTR_RO(path_info);
>  static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
>  		host_show_hp_ssd_smart_path_status,
>  		host_store_hp_ssd_smart_path_status);
> diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
> index 95f7ba3c3f1a..517ff203cfde 100644
> --- a/drivers/scsi/lpfc/lpfc_attr.c
> +++ b/drivers/scsi/lpfc/lpfc_attr.c
> @@ -2294,8 +2294,8 @@ static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
>  		   lpfc_num_discovered_ports_show, NULL);
>  static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
>  static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
> -static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL);
> -static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
> +static DEVICE_ATTR_RO(lpfc_drvr_version);
> +static DEVICE_ATTR_RO(lpfc_enable_fip);
>  static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
>  		   lpfc_board_mode_show, lpfc_board_mode_store);
>  static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
> @@ -2306,12 +2306,11 @@ static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
>  static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
>  static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
>  static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
> -static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL);
> -static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show, NULL);
> -static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show, NULL);
> -static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
> -static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
> -		   lpfc_sriov_hw_max_virtfn_show, NULL);
> +static DEVICE_ATTR_RO(lpfc_temp_sensor);
> +static DEVICE_ATTR_RO(lpfc_fips_level);
> +static DEVICE_ATTR_RO(lpfc_fips_rev);
> +static DEVICE_ATTR_RO(lpfc_dss);
> +static DEVICE_ATTR_RO(lpfc_sriov_hw_max_virtfn);
>  static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
>  static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
>  		   NULL);
> @@ -3719,8 +3718,7 @@ lpfc_static_vport_show(struct device *dev, struct device_attribute *attr,
>  /*
>   * Sysfs attribute to control the statistical data collection.
>   */
> -static DEVICE_ATTR(lpfc_static_vport, S_IRUGO,
> -		   lpfc_static_vport_show, NULL);
> +static DEVICE_ATTR_RO(lpfc_static_vport);
>
>  /**
>   * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
> diff --git a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> index a1c81c12718c..4338b8a1309f 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> @@ -158,10 +158,10 @@ static ssize_t dynamic_pool_show(struct device *dev,
>  	return ret;
>  };
>
> -static DEVICE_ATTR(active_bo, 0444, active_bo_show, NULL);
> -static DEVICE_ATTR(free_bo, 0444, free_bo_show, NULL);
> -static DEVICE_ATTR(reserved_pool, 0444, reserved_pool_show, NULL);
> -static DEVICE_ATTR(dynamic_pool, 0444, dynamic_pool_show, NULL);
> +static DEVICE_ATTR_RO(active_bo);
> +static DEVICE_ATTR_RO(free_bo);
> +static DEVICE_ATTR_RO(reserved_pool);
> +static DEVICE_ATTR_RO(dynamic_pool);
>
>  static struct attribute *sysfs_attrs_ctrl[] = {
>  	&dev_attr_active_bo.attr,
> diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
> index c008af7fb480..2bc964392924 100644
> --- a/drivers/thermal/thermal_sysfs.c
> +++ b/drivers/thermal/thermal_sysfs.c
> @@ -396,10 +396,10 @@ create_s32_tzp_attr(offset);
>   * All the attributes created for tzp (create_s32_tzp_attr) also are always
>   * present on the sysfs interface.
>   */
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> +static DEVICE_ATTR_RO(type);
> +static DEVICE_ATTR_RO(temp);
>  static DEVICE_ATTR_RW(policy);
> -static DEVICE_ATTR(available_policies, S_IRUGO, available_policies_show, NULL);
> +static DEVICE_ATTR_RO(available_policies);
>  static DEVICE_ATTR_RW(sustainable_power);
>
>  /* These thermal zone device attributes are created based on conditions */
> diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
> index 2d392f2d7ffe..9a380e55f4af 100644
> --- a/sound/soc/soc-core.c
> +++ b/sound/soc/soc-core.c
> @@ -173,7 +173,7 @@ static ssize_t codec_reg_show(struct device *dev,
>  	return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
>  }
>
> -static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
> +static DEVICE_ATTR_RO(codec_reg);
>
>  static ssize_t pmdown_time_show(struct device *dev,
>  				struct device_attribute *attr, char *buf)
> diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
> index a10b21cfc31e..d1977ced895f 100644
> --- a/sound/soc/soc-dapm.c
> +++ b/sound/soc/soc-dapm.c
> @@ -2364,7 +2364,7 @@ static ssize_t dapm_widget_show(struct device *dev,
>  	return count;
>  }
>
> -static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
> +static DEVICE_ATTR_RO(dapm_widget);
>
>  struct attribute *soc_dapm_dev_attrs[] = {
>  	&dev_attr_dapm_widget.attr,


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Re: [-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Sakari Ailus]

Hi Joe,

On Tue, Dec 19, 2017 at 10:15:08AM -0800, Joe Perches wrote:
> diff --git a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> index a1c81c12718c..4338b8a1309f 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> @@ -158,10 +158,10 @@ static ssize_t dynamic_pool_show(struct device *dev,
>  	return ret;
>  };
>  
> -static DEVICE_ATTR(active_bo, 0444, active_bo_show, NULL);
> -static DEVICE_ATTR(free_bo, 0444, free_bo_show, NULL);
> -static DEVICE_ATTR(reserved_pool, 0444, reserved_pool_show, NULL);
> -static DEVICE_ATTR(dynamic_pool, 0444, dynamic_pool_show, NULL);
> +static DEVICE_ATTR_RO(active_bo);
> +static DEVICE_ATTR_RO(free_bo);
> +static DEVICE_ATTR_RO(reserved_pool);
> +static DEVICE_ATTR_RO(dynamic_pool);
>  
>  static struct attribute *sysfs_attrs_ctrl[] = {
>  	&dev_attr_active_bo.attr,

I have the exact same changes queued up in my tree. As there seem to be no
dependencies to other patches in your set, how about dropping this chunk?

Thanks.

-- 
Sakari Ailus
e-mail: sakari.ailus@iki.fi
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Re: [-next PATCH 3/4] treewide: Use DEVICE_ATTR_RO

[Greg Kroah-Hartman]

On Thu, Dec 21, 2017 at 11:34:10AM +0200, Sakari Ailus wrote:
> Hi Joe,
> 
> On Tue, Dec 19, 2017 at 10:15:08AM -0800, Joe Perches wrote:
> > diff --git a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> > index a1c81c12718c..4338b8a1309f 100644
> > --- a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> > +++ b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm.c
> > @@ -158,10 +158,10 @@ static ssize_t dynamic_pool_show(struct device *dev,
> >  	return ret;
> >  };
> >  
> > -static DEVICE_ATTR(active_bo, 0444, active_bo_show, NULL);
> > -static DEVICE_ATTR(free_bo, 0444, free_bo_show, NULL);
> > -static DEVICE_ATTR(reserved_pool, 0444, reserved_pool_show, NULL);
> > -static DEVICE_ATTR(dynamic_pool, 0444, dynamic_pool_show, NULL);
> > +static DEVICE_ATTR_RO(active_bo);
> > +static DEVICE_ATTR_RO(free_bo);
> > +static DEVICE_ATTR_RO(reserved_pool);
> > +static DEVICE_ATTR_RO(dynamic_pool);
> >  
> >  static struct attribute *sysfs_attrs_ctrl[] = {
> >  	&dev_attr_active_bo.attr,
> 
> I have the exact same changes queued up in my tree. As there seem to be no
> dependencies to other patches in your set, how about dropping this chunk?

I've now dropped it, thanks.

greg k-h
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[-next PATCH 4/4] treewide: Use DEVICE_ATTR_WO

[Joe Perches]

Convert DEVICE_ATTR uses to DEVICE_ATTR_WO where possible.

Done with perl script:

$ git grep -w --name-only DEVICE_ATTR | \
  xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IWUSR\s*|\s*0200\s*)\)?\s*,\s*NULL\s*,\s*\s_store\s*\)/DEVICE_ATTR_WO(\1)/g; print;}'

Signed-off-by: Joe Perches <joe@perches.com>
---
 arch/s390/kernel/smp.c                 | 2 +-
 arch/x86/kernel/cpu/microcode/core.c   | 2 +-
 drivers/input/touchscreen/elants_i2c.c | 2 +-
 drivers/net/ethernet/ibm/ibmvnic.c     | 2 +-
 drivers/net/wimax/i2400m/sysfs.c       | 3 +--
 drivers/scsi/lpfc/lpfc_attr.c          | 3 +--
 drivers/thermal/thermal_sysfs.c        | 2 +-
 7 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index b8c1a85bcf2d..a919b2f0141d 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -1151,7 +1151,7 @@ static ssize_t __ref rescan_store(struct device *dev,
 	rc = smp_rescan_cpus();
 	return rc ? rc : count;
 }
-static DEVICE_ATTR(rescan, 0200, NULL, rescan_store);
+static DEVICE_ATTR_WO(rescan);
 #endif /* CONFIG_HOTPLUG_CPU */
 
 static int __init s390_smp_init(void)
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index c4fa4a85d4cb..09c74b0560dd 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -560,7 +560,7 @@ static ssize_t pf_show(struct device *dev,
 	return sprintf(buf, "0x%x\n", uci->cpu_sig.pf);
 }
 
-static DEVICE_ATTR(reload, 0200, NULL, reload_store);
+static DEVICE_ATTR_WO(reload);
 static DEVICE_ATTR(version, 0400, version_show, NULL);
 static DEVICE_ATTR(processor_flags, 0400, pf_show, NULL);
 
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index a458e5ec9e41..819213e88f32 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -1000,7 +1000,7 @@ static ssize_t show_iap_mode(struct device *dev,
 				"Normal" : "Recovery");
 }
 
-static DEVICE_ATTR(calibrate, S_IWUSR, NULL, calibrate_store);
+static DEVICE_ATTR_WO(calibrate);
 static DEVICE_ATTR(iap_mode, S_IRUGO, show_iap_mode, NULL);
 static DEVICE_ATTR(update_fw, S_IWUSR, NULL, write_update_fw);
 
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 1dc4aef37d3a..42b96e1a1b13 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -4411,7 +4411,7 @@ static ssize_t failover_store(struct device *dev, struct device_attribute *attr,
 	return count;
 }
 
-static DEVICE_ATTR(failover, 0200, NULL, failover_store);
+static DEVICE_ATTR_WO(failover);
 
 static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
 {
diff --git a/drivers/net/wimax/i2400m/sysfs.c b/drivers/net/wimax/i2400m/sysfs.c
index 1237109f251a..8c67df11105c 100644
--- a/drivers/net/wimax/i2400m/sysfs.c
+++ b/drivers/net/wimax/i2400m/sysfs.c
@@ -65,8 +65,7 @@ ssize_t i2400m_idle_timeout_store(struct device *dev,
 }
 
 static
-DEVICE_ATTR(i2400m_idle_timeout, S_IWUSR,
-	    NULL, i2400m_idle_timeout_store);
+DEVICE_ATTR_WO(i2400m_idle_timeout);
 
 static
 struct attribute *i2400m_dev_attrs[] = {
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 517ff203cfde..6ddaf51a23f6 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -2418,8 +2418,7 @@ lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
 
 	return count;
 }
-static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
-		   lpfc_soft_wwn_enable_store);
+static DEVICE_ATTR_WO(lpfc_soft_wwn_enable);
 
 /**
  * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index 2bc964392924..ba81c9080f6e 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -317,7 +317,7 @@ emul_temp_store(struct device *dev, struct device_attribute *attr,
 
 	return ret ? ret : count;
 }
-static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
+static DEVICE_ATTR_WO(emul_temp);
 #endif
 
 static ssize_t
-- 
2.15.0

Re: [-next PATCH 4/4] treewide: Use DEVICE_ATTR_WO

[Zhang Rui]

On Tue, 2017-12-19 at 10:15 -0800, Joe Perches wrote:
> Convert DEVICE_ATTR uses to DEVICE_ATTR_WO where possible.
> 
> Done with perl script:
> 
> $ git grep -w --name-only DEVICE_ATTR | \
>   xargs perl -i -e 'local $/; while (<>) {
> s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IWUSR\s*|\s*0200\s*)\)?
> \s*,\s*NULL\s*,\s*\s_store\s*\)/DEVICE_ATTR_WO(\1)/g; print;}'
> 
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  arch/s390/kernel/smp.c                 | 2 +-
>  arch/x86/kernel/cpu/microcode/core.c   | 2 +-
>  drivers/input/touchscreen/elants_i2c.c | 2 +-
>  drivers/net/ethernet/ibm/ibmvnic.c     | 2 +-
>  drivers/net/wimax/i2400m/sysfs.c       | 3 +--
>  drivers/scsi/lpfc/lpfc_attr.c          | 3 +--
>  drivers/thermal/thermal_sysfs.c        | 2 +-

For the thermal part,
Acked-by: Zhang Rui <rui.zhang@intel.com>

thanks,
rui

>  7 files changed, 7 insertions(+), 9 deletions(-)
> 
> diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
> index b8c1a85bcf2d..a919b2f0141d 100644
> --- a/arch/s390/kernel/smp.c
> +++ b/arch/s390/kernel/smp.c
> @@ -1151,7 +1151,7 @@ static ssize_t __ref rescan_store(struct device
> *dev,
>  	rc = smp_rescan_cpus();
>  	return rc ? rc : count;
>  }
> -static DEVICE_ATTR(rescan, 0200, NULL, rescan_store);
> +static DEVICE_ATTR_WO(rescan);
>  #endif /* CONFIG_HOTPLUG_CPU */
>  
>  static int __init s390_smp_init(void)
> diff --git a/arch/x86/kernel/cpu/microcode/core.c
> b/arch/x86/kernel/cpu/microcode/core.c
> index c4fa4a85d4cb..09c74b0560dd 100644
> --- a/arch/x86/kernel/cpu/microcode/core.c
> +++ b/arch/x86/kernel/cpu/microcode/core.c
> @@ -560,7 +560,7 @@ static ssize_t pf_show(struct device *dev,
>  	return sprintf(buf, "0x%x\n", uci->cpu_sig.pf);
>  }
>  
> -static DEVICE_ATTR(reload, 0200, NULL, reload_store);
> +static DEVICE_ATTR_WO(reload);
>  static DEVICE_ATTR(version, 0400, version_show, NULL);
>  static DEVICE_ATTR(processor_flags, 0400, pf_show, NULL);
>  
> diff --git a/drivers/input/touchscreen/elants_i2c.c
> b/drivers/input/touchscreen/elants_i2c.c
> index a458e5ec9e41..819213e88f32 100644
> --- a/drivers/input/touchscreen/elants_i2c.c
> +++ b/drivers/input/touchscreen/elants_i2c.c
> @@ -1000,7 +1000,7 @@ static ssize_t show_iap_mode(struct device
> *dev,
>  				"Normal" : "Recovery");
>  }
>  
> -static DEVICE_ATTR(calibrate, S_IWUSR, NULL, calibrate_store);
> +static DEVICE_ATTR_WO(calibrate);
>  static DEVICE_ATTR(iap_mode, S_IRUGO, show_iap_mode, NULL);
>  static DEVICE_ATTR(update_fw, S_IWUSR, NULL, write_update_fw);
>  
> diff --git a/drivers/net/ethernet/ibm/ibmvnic.c
> b/drivers/net/ethernet/ibm/ibmvnic.c
> index 1dc4aef37d3a..42b96e1a1b13 100644
> --- a/drivers/net/ethernet/ibm/ibmvnic.c
> +++ b/drivers/net/ethernet/ibm/ibmvnic.c
> @@ -4411,7 +4411,7 @@ static ssize_t failover_store(struct device
> *dev, struct device_attribute *attr,
>  	return count;
>  }
>  
> -static DEVICE_ATTR(failover, 0200, NULL, failover_store);
> +static DEVICE_ATTR_WO(failover);
>  
>  static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
>  {
> diff --git a/drivers/net/wimax/i2400m/sysfs.c
> b/drivers/net/wimax/i2400m/sysfs.c
> index 1237109f251a..8c67df11105c 100644
> --- a/drivers/net/wimax/i2400m/sysfs.c
> +++ b/drivers/net/wimax/i2400m/sysfs.c
> @@ -65,8 +65,7 @@ ssize_t i2400m_idle_timeout_store(struct device
> *dev,
>  }
>  
>  static
> -DEVICE_ATTR(i2400m_idle_timeout, S_IWUSR,
> -	    NULL, i2400m_idle_timeout_store);
> +DEVICE_ATTR_WO(i2400m_idle_timeout);
>  
>  static
>  struct attribute *i2400m_dev_attrs[] = {
> diff --git a/drivers/scsi/lpfc/lpfc_attr.c
> b/drivers/scsi/lpfc/lpfc_attr.c
> index 517ff203cfde..6ddaf51a23f6 100644
> --- a/drivers/scsi/lpfc/lpfc_attr.c
> +++ b/drivers/scsi/lpfc/lpfc_attr.c
> @@ -2418,8 +2418,7 @@ lpfc_soft_wwn_enable_store(struct device *dev,
> struct device_attribute *attr,
>  
>  	return count;
>  }
> -static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
> -		   lpfc_soft_wwn_enable_store);
> +static DEVICE_ATTR_WO(lpfc_soft_wwn_enable);
>  
>  /**
>   * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the
> adapter
> diff --git a/drivers/thermal/thermal_sysfs.c
> b/drivers/thermal/thermal_sysfs.c
> index 2bc964392924..ba81c9080f6e 100644
> --- a/drivers/thermal/thermal_sysfs.c
> +++ b/drivers/thermal/thermal_sysfs.c
> @@ -317,7 +317,7 @@ emul_temp_store(struct device *dev, struct
> device_attribute *attr,
>  
>  	return ret ? ret : count;
>  }
> -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> +static DEVICE_ATTR_WO(emul_temp);
>  #endif
>  
>  static ssize_t

Re: [-next PATCH 0/4] sysfs and DEVICE_ATTR_<foo>

[Jani Nikula]

On Tue, 19 Dec 2017, Joe Perches <joe@perches.com> wrote:
>  drivers/gpu/drm/i915/i915_sysfs.c                  | 12 ++--

For i915,

Acked-by: Jani Nikula <jani.nikula@intel.com>


-- 
Jani Nikula, Intel Open Source Technology Center

Re: [-next PATCH 0/4] sysfs and DEVICE_ATTR_<foo>

[Corey Minyard]

On 12/19/2017 12:15 PM, Joe Perches wrote:
>   drivers/char/ipmi/ipmi_msghandler.c                | 17 +++---

For ipmi:

Acked-by: Corey Minyard <cminyard@mvista.com>

Re: [-next PATCH 0/4] sysfs and DEVICE_ATTR_<foo>

[Felipe Balbi]

Hi,

Joe Perches <joe@perches.com> writes:
>  drivers/usb/phy/phy-tahvo.c                        |  2 +-

Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>

-- 
balbi
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