From 0bdb080c70495ea4efbed7661b4fe6100bd5adde Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Thu, 21 Feb 2019 10:23:08 +0100 Subject: Revert "backports: Remove unused parts" This reverts commit ab3fd3b9a801a9faa2619e2e65207e736f859a6d. --- backport/backport-include/sound/pcm.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 backport/backport-include/sound/pcm.h (limited to 'backport/backport-include/sound/pcm.h') diff --git a/backport/backport-include/sound/pcm.h b/backport/backport-include/sound/pcm.h new file mode 100644 index 00000000..d5794ef9 --- /dev/null +++ b/backport/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