scsi: ibmvfc: Fix I/O hang when port is not mapped

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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>

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Brian King 2016-09-19 08:59:19 -05:00 • committed by Martin K. Petersen

parent 2f3e77323d

commit 07d0e9a847

1 changed files with 0 additions and 1 deletions

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drivers/scsi/ibmvscsi/ibmvfc.c

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