From: Clemens Ladisch <clemens@ladisch.de>
Date: Wed, 11 May 2011 09:07:09 +0000 (+0200)
Subject: ALSA: isight: fix locking
X-Git-Tag: v3.0-rc1~347^2~2^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f3f7c1837f6bcae3601fc535b339426868bf1549;p=pandora-kernel.git

ALSA: isight: fix locking

Lockdep complains about conflicts between isight->mutex,
ALSA's register_mutex, mm->mmap_sem, and pcm->open_mutex.

This can be fixed by moving the calls to isight_pcm_abort(),
snd_card_disconnect(), and fw_iso_resources_update() out of
isight->mutex.  These functions are designed to be called
asynchronously; the mutex needs to protect only the device
streaming state modified by isight_start/stop_streaming().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

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