[PATCH] libata: regularize dma_start/stop arguments

Needed for a few PATA drivers.

Also fix up a wrong comment.
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 19b45c2bfa26..f15a07f9f471 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -3017,7 +3017,7 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc)
                 host_stat = ap->ops->bmdma_status(ap);
 
                 /* before we do anything else, clear DMA-Start bit */
-                ap->ops->bmdma_stop(ap);
+                ap->ops->bmdma_stop(qc);
 
                 /* fall through */
 
@@ -3399,7 +3399,7 @@ static void ata_bmdma_setup_mmio (struct ata_queued_cmd *qc)
 }
 
 /**
- *      ata_bmdma_start - Start a PCI IDE BMDMA transaction
+ *      ata_bmdma_start_mmio - Start a PCI IDE BMDMA transaction
  *      @qc: Info associated with this ATA transaction.
  *
  *      LOCKING:
@@ -3570,7 +3570,7 @@ u8 ata_bmdma_status(struct ata_port *ap)
 
 /**
  *      ata_bmdma_stop - Stop PCI IDE BMDMA transfer
- *      @ap: Port associated with this ATA transaction.
+ *      @qc: Command we are ending DMA for
  *
  *      Clears the ATA_DMA_START flag in the dma control register
  *
@@ -3580,8 +3580,9 @@ u8 ata_bmdma_status(struct ata_port *ap)
  *      spin_lock_irqsave(host_set lock)
  */
 
-void ata_bmdma_stop(struct ata_port *ap)
+void ata_bmdma_stop(struct ata_queued_cmd *qc)
 {
+        struct ata_port *ap = qc->ap;
         if (ap->flags & ATA_FLAG_MMIO) {
                 void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr;
 
@@ -3633,7 +3634,7 @@ inline unsigned int ata_host_intr (struct ata_port *ap,
                         goto idle_irq;
 
                 /* before we do anything else, clear DMA-Start bit */
-                ap->ops->bmdma_stop(ap);
+                ap->ops->bmdma_stop(qc);
 
                 /* fall through */