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path: root/drivers/scsi/device_handler
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Diffstat (limited to 'drivers/scsi/device_handler')
-rw-r--r--drivers/scsi/device_handler/scsi_dh_alua.c29
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 4865a99d9c38..fda9cdea0e60 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -675,14 +675,37 @@ static int alua_activate(struct scsi_device *sdev,
{
struct alua_dh_data *h = get_alua_data(sdev);
int err = SCSI_DH_OK;
+ int stpg = 0;
err = alua_rtpg(sdev, h);
if (err != SCSI_DH_OK)
goto out;
- if (h->tpgs & TPGS_MODE_EXPLICIT &&
- h->state != TPGS_STATE_OPTIMIZED &&
- h->state != TPGS_STATE_LBA_DEPENDENT) {
+ if (h->tpgs & TPGS_MODE_EXPLICIT) {
+ switch (h->state) {
+ case TPGS_STATE_NONOPTIMIZED:
+ stpg = 1;
+ if ((h->flags & ALUA_OPTIMIZE_STPG) &&
+ (!h->pref) &&
+ (h->tpgs & TPGS_MODE_IMPLICIT))
+ stpg = 0;
+ break;
+ case TPGS_STATE_STANDBY:
+ stpg = 1;
+ break;
+ case TPGS_STATE_UNAVAILABLE:
+ case TPGS_STATE_OFFLINE:
+ err = SCSI_DH_IO;
+ break;
+ case TPGS_STATE_TRANSITIONING:
+ err = SCSI_DH_RETRY;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (stpg) {
h->callback_fn = fn;
h->callback_data = data;
err = submit_stpg(h);