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scsi: mpt3sas: simplify _wait_for_commands_to_complete() 

Use 'host_busy' instead of counting outstanding commands by hand.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2018-01-04 04:57:10 -08:00 committed by Martin K. Petersen
parent 6da999fe5a
commit 272e253c7b
1 changed files with 4 additions and 10 deletions
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14
drivers/scsi/mpt3sas/mpt3sas_base.c
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@ -2898,9 +2898,9 @@ _base_recovery_check(struct MPT3SAS_ADAPTER *ioc)
* See _wait_for_commands_to_complete() call with regards to this code.
*/
if (ioc->shost_recovery && ioc->pending_io_count) {
if (ioc->pending_io_count == 1)
ioc->pending_io_count = atomic_read(&ioc->shost->host_busy);
if (ioc->pending_io_count == 0)
wake_up(&ioc->reset_wq);
ioc->pending_io_count--;
}
}
@ -6310,15 +6310,13 @@ _base_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
* _wait_for_commands_to_complete - reset controller
* @ioc: Pointer to MPT_ADAPTER structure
*
* This function waiting(3s) for all pending commands to complete
* This function is waiting 10s for all pending commands to complete
* prior to putting controller in reset.
*/
static void
_wait_for_commands_to_complete(struct MPT3SAS_ADAPTER *ioc)
{
u32 ioc_state;
unsigned long flags;
u16 i;
ioc->pending_io_count = 0;
@ -6327,11 +6325,7 @@ _wait_for_commands_to_complete(struct MPT3SAS_ADAPTER *ioc)
return;
/* pending command count */
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
for (i = 0; i < ioc->scsiio_depth; i++)
if (ioc->scsi_lookup[i].cb_idx != 0xFF)
ioc->pending_io_count++;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
ioc->pending_io_count = atomic_read(&ioc->shost->host_busy);
if (!ioc->pending_io_count)
return;