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| author | Andy Walls <awalls@radix.net> | 2008-12-12 15:50:27 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 09:38:32 -0200 |
| commit | abb096de82f6f920a06ca935f76925261e66b556 (patch) | |
| tree | 51f71ecb1d420083e54162b32733cf237b5b2393 /drivers/media/video/cx18/cx18-streams.h | |
| parent | 765f6f612ef69ada79f7ec2627dcbc49276bf7b5 (diff) | |
| download | kernel_samsung_smdk4412-abb096de82f6f920a06ca935f76925261e66b556.tar.gz kernel_samsung_smdk4412-abb096de82f6f920a06ca935f76925261e66b556.tar.bz2 kernel_samsung_smdk4412-abb096de82f6f920a06ca935f76925261e66b556.zip | |
V4L/DVB (9804): cx18: Avoid making firmware API calls with the queue lock held
cx18: Avoid making firmware API calls with the queue lock held. The source
of MPEG strem corruption when not holding the queue lock was found to be that
the MPEG buffer could be retrieved by the user app before it was sync'ed for
the host cpu. Incoming buffers are now sync'ed before being put on q_full and
releasing the queue lock. We can thus avoid the sometimes lengthy call to
the firmware for CPU_DE_SET_MDL while holding the queue lock, so we can get
better performance.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-streams.h')
| -rw-r--r-- | drivers/media/video/cx18/cx18-streams.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/video/cx18/cx18-streams.h b/drivers/media/video/cx18/cx18-streams.h index 635d34b75ab..420e0a17294 100644 --- a/drivers/media/video/cx18/cx18-streams.h +++ b/drivers/media/video/cx18/cx18-streams.h @@ -29,7 +29,7 @@ int cx18_streams_register(struct cx18 *cx); void cx18_streams_cleanup(struct cx18 *cx, int unregister); /* Capture related */ -void cx18_stream_load_fw_queue_nolock(struct cx18_stream *s); +void cx18_stream_load_fw_queue(struct cx18_stream *s); struct cx18_queue *cx18_stream_put_buf_fw(struct cx18_stream *s, struct cx18_buffer *buf); int cx18_start_v4l2_encode_stream(struct cx18_stream *s); |