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>

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 24c6c3f5e208ba24b5d29c05283e514dbc2fccf8..6812f4788789d5bfc66e6dca8cc71059fcea5967 100644 (file)
--- 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;
 }