ide: check drive->using_dma in flagged_taskfile()

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

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 6812f4788789..73ef6bf5fbcc 100644
--- 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);