From: Arnd Bergmann <arnd@arndb.de>
Date: Thu, 2 Jan 2014 12:07:50 +0000 (+0100)
Subject: sound: oss: dmasound: kill SLEEP() macro to avoid race
X-Git-Tag: v3.14-rc1~143^2~1^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a1e0a80ceb766852e8abd5d4c3d9475611a7d85;p=pandora-kernel.git

sound: oss: dmasound: kill SLEEP() macro to avoid race

The use of interruptible_sleep_on_timeout in the dmasound driver
is questionable and we want to kill off all sleep_on variants.
This replaces the calls with wait_event_interruptible_timeout
where possible, to wait for a particular event instead of blocking
in a racy way. In the sq_write function, the easiest solution is
an open-coded prepare_to_wait loop.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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