[PATCH 3/4] PCI: Remove reset_fn field from pci_dev

ameynarkhede03
2021-03-12T17:37:26Z

From: Amey Narkhede <ameynarkhede03@gmail.com>

reset_fn field is used to indicate whether the
device supports any reset mechanism or not.
Deprecate use of reset_fn in favor of new
reset_methods bitmap which can be used to keep
track of all supported reset mechanisms of a device.

Signed-off-by: Amey Narkhede <ameynarkhede03@gmail.com>
---
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>

drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 2 +-
drivers/pci/pci-sysfs.c | 6 ++----
drivers/pci/pci.c | 6 +++---
drivers/pci/probe.c | 1 -
drivers/pci/quirks.c | 2 +-
include/linux/pci.h | 1 -
6 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
index 9b9d305c6..3e2c49e08 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -526,7 +526,7 @@ static void octeon_destroy_resources(struct octeon_device *oct)
oct->irq_name_storage = NULL;
}
/* Soft reset the octeon device before exiting */
- if (oct->pci_dev->reset_fn)
+ if (oct->pci_dev->reset_methods)
octeon_pci_flr(oct);
else
cn23xx_vf_ask_pf_to_do_flr(oct);
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index f8afd54ca..78d2c130c 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1334,7 +1334,7 @@ static int pci_create_capabilities_sysfs(struct pci_dev *dev)

pcie_vpd_create_sysfs_dev_files(dev);

- if (dev->reset_fn) {
+ if (dev->reset_methods) {
retval = device_create_file(&dev->dev, &dev_attr_reset);
if (retval)
goto error;
@@ -1417,10 +1417,8 @@ int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev)
static void pci_remove_capabilities_sysfs(struct pci_dev *dev)
{
pcie_vpd_remove_sysfs_dev_files(dev);
- if (dev->reset_fn) {
+ if (dev->reset_methods)
device_remove_file(&dev->dev, &dev_attr_reset);
- dev->reset_fn = 0;
- }
}

/**
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 407b44e85..b7f6c6588 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -5175,7 +5175,7 @@ int pci_reset_function(struct pci_dev *dev)
{
int rc;

- if (!dev->reset_fn)
+ if (!dev->reset_methods)
return -ENOTTY;

pci_dev_lock(dev);
@@ -5211,7 +5211,7 @@ int pci_reset_function_locked(struct pci_dev *dev)
{
int rc;

- if (!dev->reset_fn)
+ if (!dev->reset_methods)
return -ENOTTY;

pci_dev_save_and_disable(dev);
@@ -5234,7 +5234,7 @@ int pci_try_reset_function(struct pci_dev *dev)
{
int rc;

- if (!dev->reset_fn)
+ if (!dev->reset_methods)
return -ENOTTY;

if (!pci_dev_trylock(dev))
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 01dd037bd..4764e031a 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2404,7 +2404,6 @@ static void pci_init_capabilities(struct pci_dev *dev)

pcie_report_downtraining(dev);
pci_init_reset_methods(dev);
- dev->reset_fn = !!dev->reset_methods;
}

/*
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 0a3df84c9..20a81b1bc 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5535,7 +5535,7 @@ static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev)

if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO ||
pdev->subsystem_device != 0x222e ||
- !pdev->reset_fn)
+ !pdev->reset_methods)
return;

if (pci_enable_device_mem(pdev))
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 56d6e4750..a2f003f4e 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -437,7 +437,6 @@ struct pci_dev {
unsigned int state_saved:1;
unsigned int is_physfn:1;
unsigned int is_virtfn:1;
- unsigned int reset_fn:1;
unsigned int is_hotplug_bridge:1;
unsigned int shpc_managed:1; /* SHPC owned by shpchp */
unsigned int is_thunderbolt:1; /* Thunderbolt controller */
--
2.30.2