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ALSA: compress: fix partial_drain completion state 

On partial_drain completion we should be in SNDRV_PCM_STATE_RUNNING
state, so set that for partially draining streams in
snd_compr_drain_notify() and use a flag for partially draining streams

While at it, add locks for stream state change in
snd_compr_drain_notify() as well.

Fixes: f44f2a5417 ("ALSA: compress: fix drain calls blocking other compress functions (v6)")
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Tested-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200629134737.105993-4-vkoul@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Vinod Koul 2020-06-29 19:17:37 +05:30 committed by Takashi Iwai
parent b6a1e78b96
commit f79a732a83
2 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/sound/compress_driver.h
View File

@ -66,6 +66,7 @@ struct snd_compr_runtime {
* @direction: stream direction, playback/recording
* @metadata_set: metadata set flag, true when set
* @next_track: has userspace signal next track transition, true when set
* @partial_drain: undergoing partial_drain for stream, true when set
* @private_data: pointer to DSP private data
* @dma_buffer: allocated buffer if any
*/
@ -78,6 +79,7 @@ struct snd_compr_stream {
enum snd_compr_direction direction;
bool metadata_set;
bool next_track;
bool partial_drain;
void *private_data;
struct snd_dma_buffer dma_buffer;
};
@ -182,7 +184,13 @@ 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;
/* for partial_drain case we are back to running state on success */
if (stream->partial_drain) {
stream->runtime->state = SNDRV_PCM_STATE_RUNNING;
stream->partial_drain = false; /* clear this flag as well */
} else {
stream->runtime->state = SNDRV_PCM_STATE_SETUP;
}
wake_up(&stream->runtime->sleep);
}

4
sound/core/compress_offload.c
View File

@ -764,6 +764,9 @@ static int snd_compr_stop(struct snd_compr_stream *stream)
retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_STOP);
if (!retval) {
/* clear flags and stop any drain wait */
stream->partial_drain = false;
stream->metadata_set = false;
snd_compr_drain_notify(stream);
stream->runtime->total_bytes_available = 0;
stream->runtime->total_bytes_transferred = 0;
@ -921,6 +924,7 @@ static int snd_compr_partial_drain(struct snd_compr_stream *stream)
if (stream->next_track == false)
return -EPERM;
stream->partial_drain = true;
retval = stream->ops->trigger(stream, SND_COMPR_TRIGGER_PARTIAL_DRAIN);
if (retval) {
pr_debug("Partial drain returned failure\n");