From: Libin Yang <libin.yang@intel.com>
Date: Wed, 31 Dec 2014 14:09:54 +0000 (+0800)
Subject: ALSA: pcm: add SNDRV_PCM_TRIGGER_DRAIN trigger
X-Git-Tag: fixes-v4.0-rc1~146^2~102
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48d882978eb0a15547093b4542a82b5c22548041;p=pandora-kernel.git

ALSA: pcm: add SNDRV_PCM_TRIGGER_DRAIN trigger

Add SNDRV_PCM_TRIGGER_DRAIN trigger for pcm drain.

Some audio devices require notification of drain events
in order to properly drain and shutdown an audio stream.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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