Read Status Register before stopping DMA engine to match ide-tape device driver - it should be safe and shouldn't affect anything. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov <petkovbb@xxxxxxxxx> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> --- drivers/ide/ide-floppy.c | 6 +++--- drivers/scsi/ide-scsi.c | 7 ++++--- 2 files changed, 7 insertions(+), 6 deletions(-) Index: b/drivers/ide/ide-floppy.c =================================================================== --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -399,6 +399,9 @@ static ide_startstop_t idefloppy_pc_intr debug_log("Enter %s - interrupt handler\n", __func__); + /* Clear the interrupt */ + stat = ide_read_status(drive); + if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { dma_error = hwif->dma_ops->dma_end(drive); if (dma_error) { @@ -412,9 +415,6 @@ static ide_startstop_t idefloppy_pc_intr debug_log("%s: DMA finished\n", drive->name); } - /* Clear the interrupt */ - stat = ide_read_status(drive); - /* No more interrupts */ if ((stat & DRQ_STAT) == 0) { debug_log("Packet command completed, %d bytes transferred\n", Index: b/drivers/scsi/ide-scsi.c =================================================================== --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -370,6 +370,10 @@ static ide_startstop_t idescsi_pc_intr ( pc->callback(drive); return ide_stopped; } + + /* Clear the interrupt */ + stat = ide_read_status(drive); + if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { if (hwif->dma_ops->dma_end(drive)) pc->flags |= PC_FLAG_DMA_ERROR; @@ -378,9 +382,6 @@ static ide_startstop_t idescsi_pc_intr ( debug_log("%s: DMA finished\n", drive->name); } - /* Clear the interrupt */ - stat = ide_read_status(drive); - if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ debug_log("Packet command completed, %d bytes transferred\n", -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html