From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 19 Oct 2007 22:32:37 +0000 (+0200)
Subject: ide: check drive->using_dma in flagged_taskfile()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=eda5b359dc8372424eed94f5a3e27c2deb4e76cf;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

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 6812f478878..73ef6bf5fbc 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);