From 52409fae3e4b8d16b68b61902fc09075cd97b75d Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Sun, 2 Jul 2017 16:41:37 +0200 Subject: Backports generated from 4.11 kernel Initial commit. Signed-off-by: Dominik Sliwa --- backport-include/sound/pcm.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 backport-include/sound/pcm.h (limited to 'backport-include/sound/pcm.h') diff --git a/backport-include/sound/pcm.h b/backport-include/sound/pcm.h new file mode 100644 index 0000000..d5794ef --- /dev/null +++ b/backport-include/sound/pcm.h @@ -0,0 +1,29 @@ +#ifndef __BACKPORT_SOUND_PCM_H +#define __BACKPORT_SOUND_PCM_H +#include_next +#include + +#if LINUX_VERSION_IS_LESS(3,19,0) +/** + * snd_pcm_stop_xrun - stop the running streams as XRUN + * @substream: the PCM substream instance + * + * This stops the given running substream (and all linked substreams) as XRUN. + * Unlike snd_pcm_stop(), this function takes the substream lock by itself. + * + * Return: Zero if successful, or a negative error code. + */ +static inline int snd_pcm_stop_xrun(struct snd_pcm_substream *substream) +{ + unsigned long flags; + int ret = 0; + + snd_pcm_stream_lock_irqsave(substream, flags); + if (snd_pcm_running(substream)) + ret = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); + snd_pcm_stream_unlock_irqrestore(substream, flags); + return ret; +} +#endif /* LINUX_VERSION_IS_LESS(3,19,0) */ + +#endif /* __BACKPORT_SOUND_PCM_H */ -- cgit v1.2.3