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>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index d4b32af..2314949 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -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;