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scsi: make eh_eflags persistent

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If a failed command is retried and fails again we need
to enter SCSI EH, otherwise we will never be able to
recover the command.
To detect this situation we must not clear scmd->eh_eflags
when EH finishes but rather make it persistent throughout
the lifetime of the command.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke
2017-04-06 15:36:33 +02:00
committed by Martin K. Petersen
parent 909657615d
commit 8e8c9d01c5
4 changed files with 10 additions and 11 deletions
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2
drivers/scsi/libsas/sas_scsi_host.c
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@@ -613,8 +613,6 @@ static void sas_eh_handle_sas_errors(struct Scsi_Host *shost, struct list_head *
SAS_DPRINTK("trying to find task 0x%p\n", task);
res = sas_scsi_find_task(task);
cmd->eh_eflags = 0;
switch (res) {
case TASK_IS_DONE:
SAS_DPRINTK("%s: task 0x%p is done\n", __func__,