linux

iv/linux

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Chris Wilson bc193057d4 ALSA: hda - Handle pm failure during hotplug

commit aaa23f86001bdb82d2f937c5c7bce0a1e11a6c5b upstream.

Obtaining the runtime pm wakeref can fail, especially in a hotplug
scenario where i915.ko has been unloaded. If we do not catch the
failure, we end up with an unbalanced pm.

v2 additions by tiwai:
hdmi_present_sense() checks the return value and handle only a
negative error case and bails out only if it's really still suspended.
Also, snd_hda_power_down() is called at the error path so that the
refcount is balanced.

Along with it, the spec->pcm_lock is taken outside
hdmi_present_sense() in the caller side, so that it won't cause
deadlock at reentrace via runtime resume.

v3 fix by tiwai:
Missing linux/pm_runtime.h is included.

References: 222bde03881c ("ALSA: hda - Fix mutex deadlock at HDMI/DP hotplug")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-07-17 11:37:53 +02:00

aoa

powerpc updates for 4.9

2016-10-07 20:19:31 -07:00

arm

ALSA: arm: Fix empty menuconfig SND_ARM

2016-08-01 16:07:53 +02:00

atmel

…

core

ALSA: vmaster: Propagate slave error

2018-05-30 07:50:48 +02:00