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| author |   Charles Keepax <ckeepax@opensource.cirrus.com> | 2019-02-05 16:29:40 +0000 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2019-02-05 22:01:41 +0100 |
| commit | 4f2ab5e1d13d6aa77c55f4914659784efd776eb4 (patch) | |
| tree | 96d40a5a86e2c2358d8aec9564af60e47164f709 | |
| parent | ALSA: usb-audio: Add support for new T+A USB DAC (diff) | |
| download | linux-dev-4f2ab5e1d13d6aa77c55f4914659784efd776eb4.tar.xz linux-dev-4f2ab5e1d13d6aa77c55f4914659784efd776eb4.zip | |
ALSA: compress: Fix stop handling on compressed capture streams
It is normal user behaviour to start, stop, then start a stream
again without closing it. Currently this works for compressed
playback streams but not capture ones.
The states on a compressed capture stream go directly from OPEN to
PREPARED, unlike a playback stream which moves to SETUP and waits
for a write of data before moving to PREPARED. Currently however,
when a stop is sent the state is set to SETUP for both types of
streams. This leaves a capture stream in the situation where a new
start can't be sent as that requires the state to be PREPARED and
a new set_params can't be sent as that requires the state to be
OPEN. The only option being to close the stream, and then reopen.
Correct this issues by allowing snd_compr_drain_notify to set the
state depending on the stream direction, as we already do in
set_params.
Fixes: 49bb6402f1aa ("ALSA: compress_core: Add support for capture streams")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/sound/compress_driver.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h index 0cdc3999ecfa..c5188ff724d1 100644 --- a/include/sound/compress_driver.h +++ b/include/sound/compress_driver.h @@ -173,7 +173,11 @@ static inline void snd_compr_drain_notify(struct snd_compr_stream *stream) if (snd_BUG_ON(!stream)) return; - stream->runtime->state = SNDRV_PCM_STATE_SETUP; + if (stream->direction == SND_COMPRESS_PLAYBACK) + stream->runtime->state = SNDRV_PCM_STATE_SETUP; + else + stream->runtime->state = SNDRV_PCM_STATE_PREPARED; + wake_up(&stream->runtime->sleep); } |