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| author | Vinod Koul <vinod.koul@intel.com> | 2013-04-29 14:25:23 +0530 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-04-29 13:33:18 +0200 |
| commit | 754813473c1a8b7711802313125f0fafc60141f8 (patch) | |
| tree | 3d948cec2f7b73756c4cbb548546db57f0a17b22 | |
| parent | a555bb8c6bf6932c5706745bfdbad22df26324d9 (diff) | |
| download | blackbird-op-linux-754813473c1a8b7711802313125f0fafc60141f8.tar.gz blackbird-op-linux-754813473c1a8b7711802313125f0fafc60141f8.zip | |
ALSA: compress: fix the states to check for allowing read
for reading compressed data, we need to allow when we are paused, draining or
stopped.
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/core/compress_offload.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index a0bc47f8dcf7..99db892d7299 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -311,8 +311,16 @@ static ssize_t snd_compr_read(struct file *f, char __user *buf, stream = &data->stream; mutex_lock(&stream->device->lock); - /* read is allowed when stream is running */ - if (stream->runtime->state != SNDRV_PCM_STATE_RUNNING) { + /* read is allowed when stream is running, paused, draining and setup + * (yes setup is state which we transition to after stop, so if user + * wants to read data after stop we allow that) + */ + switch (stream->runtime->state) { + case SNDRV_PCM_STATE_OPEN: + case SNDRV_PCM_STATE_PREPARED: + case SNDRV_PCM_STATE_XRUN: + case SNDRV_PCM_STATE_SUSPENDED: + case SNDRV_PCM_STATE_DISCONNECTED: retval = -EBADFD; goto out; } |
