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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>
This commit is contained in:
Narsimhulu Musini 2016-03-17 00:51:13 -07:00 committed by Martin K. Petersen
parent 6e0ae74b5c
commit 58fcf92050
1 changed files with 15 additions and 2 deletions
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17
drivers/scsi/snic/snic_disc.c
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@ -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 */