korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-11 00:04:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

[media] media: davinci: vpif_capture: fix the check on suspend/resume callbacks

Browse Source 
It is possible to call STREAMON without having any buffers queued.
So vb2_is_streaming() can return true without start_streaming()
having been called. Only after at least one buffer has been
queued will start_streaming be called.

The check vb2_is_streaming() is incorrect as this would start
the DMA without having proper DMA pointers set up. this patch
uses vb2_start_streaming_called() instead to check is streaming
was called.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Prabhakar Lad 2014-09-06 12:26:51 -03:00 committed by Mauro Carvalho Chehab
parent 815789244e
commit c54d4a0b08
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/platform/davinci/vpif_capture.c
View File

@ -1596,7 +1596,7 @@ static int vpif_suspend(struct device *dev)
ch = vpif_obj.dev[i];
common = &ch->common[VPIF_VIDEO_INDEX];
if (!vb2_is_streaming(&common->buffer_queue))
if (!vb2_start_streaming_called(&common->buffer_queue))
continue;
mutex_lock(&common->lock);
@ -1630,7 +1630,7 @@ static int vpif_resume(struct device *dev)
ch = vpif_obj.dev[i];
common = &ch->common[VPIF_VIDEO_INDEX];
if (!vb2_is_streaming(&common->buffer_queue))
if (!vb2_start_streaming_called(&common->buffer_queue))
continue;
mutex_lock(&common->lock);