ide: check drive->using_dma in flagged_taskfile()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 6812f47..73ef6bf 100644 (file)
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -837,6 +837,9 @@ ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task)
                case TASKFILE_OUT_DMA:
                case TASKFILE_IN_DMAQ:
                case TASKFILE_IN_DMA:
+                       if (!drive->using_dma)
+                               break;
+
                        if (!hwif->dma_setup(drive)) {
                                hwif->dma_exec_cmd(drive, taskfile->command);
                                hwif->dma_start(drive);