ide: check ->dma_setup() return value in flagged_taskfile()

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

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 24c6c3f5e208..6812f4788789 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -837,9 +837,11 @@ 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:
-                        hwif->dma_setup(drive);
-                        hwif->dma_exec_cmd(drive, taskfile->command);
-                        hwif->dma_start(drive);
+                        if (!hwif->dma_setup(drive)) {
+                                hwif->dma_exec_cmd(drive, taskfile->command);
+                                hwif->dma_start(drive);
+                                return ide_started;
+                        }
                         break;
 
                 default:
@@ -853,7 +855,8 @@ ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task)
                                 return task->prehandler(drive, task->rq);
                         }
                         ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL);
+                        return ide_started;
         }
 
-        return ide_started;
+        return ide_stopped;
 }