From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 21 Sep 2016 12:38:02 +0000 (+0200)
Subject: ALSA: ali5451: Fix out-of-bound position reporting
X-Git-Tag: v3.2.85~101
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=974779e8fc4c7b2d0353714171710094a117f82c;p=pandora-kernel.git

ALSA: ali5451: Fix out-of-bound position reporting

commit db68577966abc1aeae4ec597b3dcfa0d56e92041 upstream.

The pointer callbacks of ali5451 driver may return the value at the
boundary occasionally, and it results in the kernel warning like
  snd_ali5451 0000:00:06.0: BUG: , pos = 16384, buffer size = 16384, period size = 1024

It seems that folding the position offset is enough for fixing the
warning and no ill-effect has been seen by that.

Reported-by: Enrico Mioso <mrkiko.rs@gmail.com>
Tested-by: Enrico Mioso <mrkiko.rs@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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