From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 27 Jan 2015 15:17:26 +0000 (+0100)
Subject: ALSA: line6: Clear prev_fbuf and prev_fsize properly
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~130^2~35^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2bb614bb6c7f5245521195f144272ef93d9f086;p=pandora-kernel.git

ALSA: line6: Clear prev_fbuf and prev_fsize properly

Clearing prev_fsize in line6_pcm_acquire() is pretty racy.
This can be called at any time while the stream is being played.
Rather better to clear prev_fbuf and prev_fsize at the proper place
like the stream stop for capture, and just after copying the monitor /
impulse data inside the spinlock.

Tested-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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