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authorTakashi Iwai <tiwai@suse.de>2010-04-10 21:27:23 +0200
committerTakashi Iwai <tiwai@suse.de>2010-04-10 21:34:24 +0200
commit29aac005ff4dc8a5f50b80f4e5c4f59b21c0fb50 (patch)
treeb6518159bd2f25187499f3094bf2302e381b3edd /sound/arm
parentb0cc58a25d04160d39a80e436847eaa2fbc5aa09 (diff)
downloadlinux-linaro-precise-29aac005ff4dc8a5f50b80f4e5c4f59b21c0fb50.tar.gz
ALSA: usb - Fix Oops after usb-midi disconnection
usb-midi causes sometimes Oops at snd_usbmidi_output_drain() after disconnection. This is due to the access to the endpoints which have been already released at disconnection while the files are still alive. This patch fixes the problem by checking disconnection state at snd_usbmidi_output_drain() and by releasing urbs but keeping the endpoint instances until really all freed. Tested-by: Tvrtko Ursulin <tvrtko@ursulin.net> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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