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ALSA: compress: Fix poll error return codes 

We can't return a negative error code from the poll callback the return
type is unsigned and is checked against the poll specific flags we need
to return POLLERR if we encounter an error.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Charles Keepax 2016-05-04 14:59:10 +01:00 committed by Takashi Iwai
parent 5bd05390ff
commit 1d03f2bd56
1 changed files with 2 additions and 2 deletions
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4
sound/core/compress_offload.c
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@ -391,13 +391,13 @@ static unsigned int snd_compr_poll(struct file *f, poll_table *wait)
int retval = 0;
if (snd_BUG_ON(!data))
return -EFAULT;
return POLLERR;
stream = &data->stream;
mutex_lock(&stream->device->lock);
if (stream->runtime->state == SNDRV_PCM_STATE_OPEN) {
retval = -EBADFD;
retval = snd_compr_get_poll(stream) | POLLERR;
goto out;
}
poll_wait(f, &stream->runtime->sleep, wait);