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control, pcm: implement snd_ctl_abort() and snd_pcm_abort() functions

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Upon an interrupt, it is necessary to abort the wait loops with the EINTR
error code. Introduce snd_*_abort() functions to handle this case.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2013-04-08 13:28:03 +02:00
parent 730c833dd8
commit e23fb2c4de
7 changed files with 17 additions and 4 deletions
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2
src/pcm/pcm_local.h
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@ -1006,3 +1006,5 @@ static inline void sw_set_period_event(snd_pcm_sw_params_t *params, int val)
{
params->reserved[sizeof(params->reserved) / sizeof(params->reserved[0]) - 1] = val;
}
#define PCMINABORT(pcm) (((pcm)->mode & SND_PCM_ABORT) != 0)