[PATCH] libata-dev: irq-pio minor fix 2

irq-pio minor fix 2:
- Use qc as data for ata_pio_task().

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 6 insertions, 9 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index d270b23a03b8..57b3240ee867 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -4097,9 +4097,6 @@ static void ata_pio_task(void *_data)
 fsm_start:
         WARN_ON(ap->hsm_task_state == HSM_ST_IDLE);
 
-        qc = ata_qc_from_tag(ap, ap->active_tag);
-        WARN_ON(qc == NULL);
-
         /*
          * This is purely heuristic.  This is a fast path.
          * Sometimes when we enter, BSY will be cleared in
@@ -4112,7 +4109,7 @@ fsm_start:
                 msleep(2);
                 status = ata_busy_wait(ap, ATA_BUSY, 10);
                 if (status & ATA_BUSY) {
-                        ata_port_queue_task(ap, ata_pio_task, ap, ATA_SHORT_PAUSE);
+                        ata_port_queue_task(ap, ata_pio_task, qc, ATA_SHORT_PAUSE);
                         return;
                 }
         }
@@ -4347,7 +4344,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
                 ap->hsm_task_state = HSM_ST_LAST;
 
                 if (qc->tf.flags & ATA_TFLAG_POLLING)
-                        ata_port_queue_task(ap, ata_pio_task, ap, 0);
+                        ata_port_queue_task(ap, ata_pio_task, qc, 0);
 
                 break;
 
@@ -4369,7 +4366,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
                 if (qc->tf.flags & ATA_TFLAG_WRITE) {
                         /* PIO data out protocol */
                         ap->hsm_task_state = HSM_ST_FIRST;
-                        ata_port_queue_task(ap, ata_pio_task, ap, 0);
+                        ata_port_queue_task(ap, ata_pio_task, qc, 0);
 
                         /* always send first data block using
                          * the ata_pio_task() codepath.
@@ -4379,7 +4376,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
                         ap->hsm_task_state = HSM_ST;
 
                         if (qc->tf.flags & ATA_TFLAG_POLLING)
-                                ata_port_queue_task(ap, ata_pio_task, ap, 0);
+                                ata_port_queue_task(ap, ata_pio_task, qc, 0);
 
                         /* if polling, ata_pio_task() handles the rest.
                          * otherwise, interrupt handler takes over from here.
@@ -4400,7 +4397,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
                 /* send cdb by polling if no cdb interrupt */
                 if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||
                     (qc->tf.flags & ATA_TFLAG_POLLING))
-                        ata_port_queue_task(ap, ata_pio_task, ap, 0);
+                        ata_port_queue_task(ap, ata_pio_task, qc, 0);
                 break;
 
         case ATA_PROT_ATAPI_DMA:
@@ -4412,7 +4409,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
 
                 /* send cdb by polling if no cdb interrupt */
                 if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
-                        ata_port_queue_task(ap, ata_pio_task, ap, 0);
+                        ata_port_queue_task(ap, ata_pio_task, qc, 0);
                 break;
 
         default: