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scsi: core: Allow state transitions from OFFLINE to BLOCKED

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When an RSCN gets delayed (or not being sent at all), the transport class
will detect an error, EH kicks in, and eventually will be setting the
device to offline.  If we receive an RSCN after that, the device will
stay in 'offline'.  This patch allows for an 'offline' to 'blocked'
transition, thereby allowing the device to become active again.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2018-10-07 10:35:35 +02:00 committed by Martin K. Petersen
parent 86117d7f95
commit a33e5bfb29
1 changed files with 1 additions and 0 deletions
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drivers/scsi/scsi_lib.c
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@ -2764,6 +2764,7 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
switch (oldstate) {
case SDEV_RUNNING:
case SDEV_CREATED_BLOCK:
case SDEV_OFFLINE:
break;
default:
goto illegal;