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authorNarsimhulu Musini <nmusini@cisco.com>2016-03-17 10:51:13 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2016-04-11 23:57:09 +0300
commit58fcf92050cdf7b499ba6169459ec43aa0838662 (patch)
treeda1f8e6bbc5441fc421bbd0dd890202d66cda6a4 /drivers/scsi/snic
parent6e0ae74b5ca2826fa6c86a157ed5227c766156b9 (diff)
downloadlinux-58fcf92050cdf7b499ba6169459ec43aa0838662.tar.xz
snic: target cleanup in driver unload path
Fix deletes the snic targets synchronously prior to deletion of host. Signed-off-by: Narsimhulu Musini <nmusini@cisco.com> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/snic')
-rw-r--r--drivers/scsi/snic/snic_disc.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/scsi/snic/snic_disc.c b/drivers/scsi/snic/snic_disc.c
index 5f48795767bd..b0fefd67cac3 100644
--- a/drivers/scsi/snic/snic_disc.c
+++ b/drivers/scsi/snic/snic_disc.c
@@ -480,10 +480,21 @@ int
snic_disc_start(struct snic *snic)
{
struct snic_disc *disc = &snic->disc;
+ unsigned long flags;
int ret = 0;
SNIC_SCSI_DBG(snic->shost, "Discovery Start.\n");
+ spin_lock_irqsave(&snic->snic_lock, flags);
+ if (snic->in_remove) {
+ spin_unlock_irqrestore(&snic->snic_lock, flags);
+ SNIC_ERR("snic driver removal in progress ...\n");
+ ret = 0;
+
+ return ret;
+ }
+ spin_unlock_irqrestore(&snic->snic_lock, flags);
+
mutex_lock(&disc->mutex);
if (disc->state == SNIC_DISC_PENDING) {
disc->req_cnt++;
@@ -533,6 +544,8 @@ snic_tgt_del_all(struct snic *snic)
struct list_head *cur, *nxt;
unsigned long flags;
+ scsi_flush_work(snic->shost);
+
mutex_lock(&snic->disc.mutex);
spin_lock_irqsave(snic->shost->host_lock, flags);
@@ -545,7 +558,7 @@ snic_tgt_del_all(struct snic *snic)
tgt = NULL;
}
spin_unlock_irqrestore(snic->shost->host_lock, flags);
-
- scsi_flush_work(snic->shost);
mutex_unlock(&snic->disc.mutex);
+
+ flush_workqueue(snic_glob->event_q);
} /* end of snic_tgt_del_all */