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path: root/drivers/scsi/device_handler/scsi_dh_alua.c
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Diffstat (limited to 'drivers/scsi/device_handler/scsi_dh_alua.c')
-rw-r--r--drivers/scsi/device_handler/scsi_dh_alua.c25
1 files changed, 11 insertions, 14 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 1c8e538d4a2e..7a34ffb41382 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -262,24 +262,23 @@ static unsigned submit_stpg(struct alua_dh_data *h)
* Examine the TPGS setting of the sdev to find out if ALUA
* is supported.
*/
-static int alua_check_tpgs(struct scsi_device *sdev, struct alua_dh_data *h)
+static int alua_check_tpgs(struct scsi_device *sdev)
{
- int err = SCSI_DH_OK;
+ int tpgs = TPGS_MODE_NONE;
/*
* ALUA support for non-disk devices is fraught with
* difficulties, so disable it for now.
*/
if (sdev->type != TYPE_DISK) {
- h->tpgs = TPGS_MODE_NONE;
sdev_printk(KERN_INFO, sdev,
"%s: disable for non-disk devices\n",
ALUA_DH_NAME);
- return SCSI_DH_DEV_UNSUPP;
+ return tpgs;
}
- h->tpgs = scsi_device_tpgs(sdev);
- switch (h->tpgs) {
+ tpgs = scsi_device_tpgs(sdev);
+ switch (tpgs) {
case TPGS_MODE_EXPLICIT|TPGS_MODE_IMPLICIT:
sdev_printk(KERN_INFO, sdev,
"%s: supports implicit and explicit TPGS\n",
@@ -296,18 +295,16 @@ static int alua_check_tpgs(struct scsi_device *sdev, struct alua_dh_data *h)
case TPGS_MODE_NONE:
sdev_printk(KERN_INFO, sdev, "%s: not supported\n",
ALUA_DH_NAME);
- err = SCSI_DH_DEV_UNSUPP;
break;
default:
sdev_printk(KERN_INFO, sdev,
"%s: unsupported TPGS setting %d\n",
- ALUA_DH_NAME, h->tpgs);
- h->tpgs = TPGS_MODE_NONE;
- err = SCSI_DH_DEV_UNSUPP;
+ ALUA_DH_NAME, tpgs);
+ tpgs = TPGS_MODE_NONE;
break;
}
- return err;
+ return tpgs;
}
/*
@@ -627,10 +624,10 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h, int wait_
*/
static int alua_initialize(struct scsi_device *sdev, struct alua_dh_data *h)
{
- int err;
+ int err = SCSI_DH_DEV_UNSUPP;
- err = alua_check_tpgs(sdev, h);
- if (err != SCSI_DH_OK)
+ h->tpgs = alua_check_tpgs(sdev);
+ if (h->tpgs == TPGS_MODE_NONE)
goto out;
err = alua_check_vpd(sdev, h);