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| author | Charles Keepax <ckeepax@opensource.cirrus.com> | 2019-07-22 11:24:35 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-07-23 12:07:42 +0200 |
| commit | a70ab8a8645083f3700814e757f2940a88b7ef88 (patch) | |
| tree | bb8c205c2e47b75e1d0f3bd9190c494a2393df86 /sound/core | |
| parent | ALSA: compress: Prevent bypasses of set_params (diff) | |
| download | linux-a70ab8a8645083f3700814e757f2940a88b7ef88.tar.xz linux-a70ab8a8645083f3700814e757f2940a88b7ef88.zip | |
ALSA: compress: Don't allow paritial drain operations on capture streams
Partial drain and next track are intended for gapless playback and
don't really have an obvious interpretation for a capture stream, so
makes sense to not allow those operations on capture streams.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/compress_offload.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index 40dae723c59d..6cf5b8440cf3 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -834,6 +834,10 @@ static int snd_compr_next_track(struct snd_compr_stream *stream) if (stream->runtime->state != SNDRV_PCM_STATE_RUNNING) return -EPERM; + /* next track doesn't have any meaning for capture streams */ + if (stream->direction == SND_COMPRESS_CAPTURE) + return -EPERM; + /* you can signal next track if this is intended to be a gapless stream * and current track metadata is set */ @@ -861,6 +865,10 @@ static int snd_compr_partial_drain(struct snd_compr_stream *stream) break; } + /* partial drain doesn't have any meaning for capture streams */ + if (stream->direction == SND_COMPRESS_CAPTURE) + return -EPERM; + /* stream can be drained only when next track has been signalled */ if (stream->next_track == false) return -EPERM; |