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authorBrian King <brking@linux.vnet.ibm.com>2016-09-19 15:59:19 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2016-09-20 01:50:33 +0200
commit07d0e9a847401ffd2f09bd450d41644cd090e81d (patch)
tree0463eecbcae716bed431315ec355abc2d30579df /drivers/scsi/ibmvscsi
parentscsi: megaraid_sas: clean function declarations in megaraid_sas_base.c up (diff)
downloadlinux-07d0e9a847401ffd2f09bd450d41644cd090e81d.tar.xz
linux-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.c1
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);