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| author | Don Brace <don.brace@microsemi.com> | 2019-05-07 20:32:13 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-19 01:46:18 +0200 |
| commit | 4770e68d162634b2134741d08c49185f858c90ee (patch) | |
| tree | afa72eabc55f9f63e8bea9b5a1fe0d3fd7822db5 /drivers/scsi/hpsa.h | |
| parent | scsi: hpsa: use local workqueues instead of system workqueues (diff) | |
| download | linux-4770e68d162634b2134741d08c49185f858c90ee.tar.xz linux-4770e68d162634b2134741d08c49185f858c90ee.zip | |
scsi: hpsa: check for tag collision
Correct rare multipath issue where a device is deleted with an
outstanding cmd which results in a tag collision.
The cmd eventually completes. If a collision is detected wait until
the command slot is cleared.
Reviewed-by: Justin Lindley <justin.lindley@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hpsa.h')
| -rw-r--r-- | drivers/scsi/hpsa.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index 7aa7378f70dd..75210de71917 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -174,6 +174,7 @@ struct ctlr_info { struct CfgTable __iomem *cfgtable; int interrupts_enabled; int max_commands; + int last_collision_tag; /* tags are global */ atomic_t commands_outstanding; # define PERF_MODE_INT 0 # define DOORBELL_INT 1 |