From: Clemens Ladisch <clemens@ladisch.de>
Date: Mon, 15 Aug 2005 06:25:50 +0000 (+0200)
Subject: [ALSA] usb-audio: properly lock hwptr_done accesses
X-Git-Tag: v2.6.14-rc1~1029^2~39
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=daa150ef7d437d17973210f47a1c58623415df94;p=pandora-kernel.git

[ALSA] usb-audio: properly lock hwptr_done accesses

USB generic driver
Take the substream lock when reading hwptr_done to avoid a race
condition with the updates in the URB callbacks.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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