[PATCH v2 15/27] hpsa: simplify update scsi devices

Don Brace
2015-11-04T21:55:22Z

From: Kevin Barnett <kevin.barnett@pmcs.com>

remove repeated calculation that checks for physical
or logical devices.

Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Justin Lindley <justin.lindley@pmcs.com>
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Don Brace <don.brace@pmcs.com>
---
drivers/scsi/hpsa.c | 22 +++++++++++++---------
drivers/scsi/hpsa.h | 1 +
2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 77c14ae..62df480 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3752,6 +3752,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h)
int ncurrent = 0;
int i, n_ext_target_devs, ndevs_to_allocate;
int raid_ctlr_position;
+ bool physical_device;
DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);

currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
@@ -3812,16 +3813,16 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h)
int rc = 0;
int phys_dev_index = i - (raid_ctlr_position == 0);

+ physical_device = i < nphysicals + (raid_ctlr_position == 0);
+
/* Figure out where the LUN ID info is coming from */
lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
i, nphysicals, nlogicals, physdev_list, logdev_list);

/* skip masked non-disk devices */
- if (MASKED_DEVICE(lunaddrbytes))
- if (i < nphysicals + (raid_ctlr_position == 0) &&
- (physdev_list->
- LUN[phys_dev_index].device_flags & 0x01))
- continue;
+ if (MASKED_DEVICE(lunaddrbytes) && physical_device &&
+ (physdev_list->LUN[phys_dev_index].device_flags & 0x01))
+ continue;

/* Get device type, vendor, model, device id */
rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
@@ -3857,10 +3858,13 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h)
}

*this_device = *tmpdevice;
+ this_device->physical_device = physical_device;

- /* do not expose masked devices */
- if (MASKED_DEVICE(lunaddrbytes) &&
- i < nphysicals + (raid_ctlr_position == 0))
+ /*
+ * Expose all devices except for physical devices that
+ * are masked.
+ */
+ if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
this_device->expose_device = 0;
else
this_device->expose_device = 1;
@@ -3878,7 +3882,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h)
ncurrent++;
break;
case TYPE_DISK:
- if (i < nphysicals + (raid_ctlr_position == 0)) {
+ if (this_device->physical_device) {
/* The disk is in HBA mode. */
/* Never use RAID mapper in HBA mode. */
this_device->offload_enabled = 0;
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index a6ead07..50e4780 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -37,6 +37,7 @@ struct hpsa_scsi_dev_t {
unsigned int devtype;
int bus, target, lun; /* as presented to the OS */
unsigned char scsi3addr[8]; /* as presented to the HW */
+ u8 physical_device : 1;
u8 expose_device;
#define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0"
unsigned char device_id[16]; /* from inquiry pg. 0x83 */