ide-scsi: fix handling of DMA errors in idescsi_pc_intr()

Check return value of ->dma_end method and if there was a DMA error
handle it accordingly (set PC_FLAG_DMA_ERROR pc flag, don't update
pc->xferred and increase rq->errors).

Also move debug message in the right place while at it.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index e67cf8a..ed92cf7 100644 (file)
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -388,11 +388,13 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
                return ide_stopped;
        }
        if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
+               if (hwif->dma_ops->dma_end(drive))
+                       pc->flags |= PC_FLAG_DMA_ERROR;
+               else
+                       pc->xferred = pc->req_xfer;
 #if IDESCSI_DEBUG_LOG
                printk ("ide-scsi: %s: DMA complete\n", drive->name);
 #endif /* IDESCSI_DEBUG_LOG */
-               pc->xferred = pc->req_xfer;
-               (void)hwif->dma_ops->dma_end(drive);
        }
 
        /* Clear the interrupt */
@@ -405,7 +407,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
                                        " transferred\n", pc->xferred);
                pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
                local_irq_enable_in_hardirq();
-               if (stat & ERR_STAT)
+               if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR))
                        rq->errors++;
                idescsi_end_request (drive, 1, 0);
                return ide_stopped;