From: Jaroslav Kysela <perex@perex.cz>
Date: Fri, 10 Apr 2009 10:28:58 +0000 (+0200)
Subject: [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies
X-Git-Tag: v2.6.30-rc3~86^2~5^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bbf6ad1399e9516b0a95de3ad58ffbaed670e4cc;p=pandora-kernel.git

[ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies

Some drivers like Intel8x0 or Intel HDA are broken for some hardware variants.
This patch adds more strict buffer position checks based on jiffies when
internal hw_ptr is updated. Enable xrun_debug to see mangling of wrong
positions.

As a side effect, the hw_ptr interrupt update routine might do slightly better
job when many interrupts are lost.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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