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| author | Brian King <brking@linux.vnet.ibm.com> | 2016-09-19 08:59:19 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-09-19 19:50:33 -0400 |
| commit | 07d0e9a847401ffd2f09bd450d41644cd090e81d (patch) | |
| tree | 0463eecbcae716bed431315ec355abc2d30579df /drivers/scsi/ibmvscsi | |
| parent | 2f3e77323d3159cb6c2a002fa6c58ba22e7c837e (diff) | |
| download | linux-stable-07d0e9a847401ffd2f09bd450d41644cd090e81d.tar.gz linux-stable-07d0e9a847401ffd2f09bd450d41644cd090e81d.tar.bz2 linux-stable-07d0e9a847401ffd2f09bd450d41644cd090e81d.zip | |
scsi: ibmvfc: Fix I/O hang when port is not mapped
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.
Cc: <stable@vger.kernel.org>
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>
Diffstat (limited to 'drivers/scsi/ibmvscsi')
| -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 56b9f452425b..7e487c78279c 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -721,7 +721,6 @@ 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); |