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| author | Brian King <brking@linux.vnet.ibm.com> | 2016-09-19 08:59:19 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-22 12:06:48 +0200 |
| commit | 5131d36b8106905f455b024c811f969966349756 (patch) | |
| tree | c83e102ddbfd10012dea84a0668e7253b30ae27c | |
| parent | 1e7f077827be9611b6382a1be5b4d208928a9fcf (diff) | |
| download | linux-stable-5131d36b8106905f455b024c811f969966349756.tar.gz linux-stable-5131d36b8106905f455b024c811f969966349756.tar.bz2 linux-stable-5131d36b8106905f455b024c811f969966349756.zip | |
scsi: ibmvfc: Fix I/O hang when port is not mapped
commit 07d0e9a847401ffd2f09bd450d41644cd090e81d upstream.
If a VFC port gets unmapped in the VIOS, it may not respond with a CRQ
init complete following H_REG_CRQ. If this occurs, we can end up having
called scsi_block_requests and not a resulting unblock until the init
complete happens, which may never occur, and we end up hanging I/O
requests. This patch ensures the host action stay set to
IBMVFC_HOST_ACTION_TGT_DEL so we move all rports into devloss state and
unblock unless we receive an init complete.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvfc.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index fc523c3e5019..6398f3d7b323 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -717,7 +717,6 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost) spin_lock_irqsave(vhost->host->host_lock, flags); vhost->state = IBMVFC_NO_CRQ; vhost->logged_in = 0; - ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); /* Clean out the queue */ memset(crq->msgs, 0, PAGE_SIZE); |