[Precise SRU] LP#1097396

[Chris J Arges]

SRU Justification:

  Impact: When using a USB audio headset with pulseaudio, if one unplugs 
the headset the kernel will panic.

  Fix: This issue was because of some stable patches that were backported.
The problem was shown to Takashi Iwai (upstream alsa), and he created a
patch to fix this issue which was then applied to the 3.4 branch of the
stable tree. This patch has then been cherry-picked to 3.2 precise.
I also requested that this patch be applied to the 3.2 stable branch.
Here is the link to the commit: 
http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commit;h=115b96e58609cff057d22d0e6118dae093763461

  Testcase: Plug in a USB audio headset (ensure pulseaudio is working). Unplug it. If the kernel does not panic, then the test passes.


Takashi Iwai (1):
  ALSA: usb-audio: Fix regression by disconnection-race-fix patch

 sound/usb/endpoint.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

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1.7.9.5