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[3/4] tw686x-kh: specify that the DMA is 32 bits

Message ID 1458560481-16200-4-git-send-email-hverkuil@xs4all.nl (mailing list archive)
State New, archived
Headers show

Commit Message

Hans Verkuil March 21, 2016, 11:41 a.m. UTC 
From: Hans Verkuil <hans.verkuil@cisco.com>

Set vb2_queue.gfp_flags to GFP_DMA32. Otherwise it will start to
create bounce buffers which is something you want to avoid since
those are in limited supply.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
 drivers/staging/media/tw686x-kh/tw686x-kh-video.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox

Patch

diff --git a/drivers/staging/media/tw686x-kh/tw686x-kh-video.c b/drivers/staging/media/tw686x-kh/tw686x-kh-video.c
index fb7a784..caf045a 100644
--- a/drivers/staging/media/tw686x-kh/tw686x-kh-video.c
+++ b/drivers/staging/media/tw686x-kh/tw686x-kh-video.c
@@ -766,6 +766,7 @@  int tw686x_video_init(struct tw686x_dev *dev)
 		vc->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 		vc->vidq.min_buffers_needed = 2;
 		vc->vidq.lock = &vc->vb_mutex;
+		vc->vidq.gfp_flags = GFP_DMA32;
 
 		err = vb2_queue_init(&vc->vidq);
 		if (err)