This is a note to let you know that I've just added the patch titled
ALSA: hda - Clear the leftover component assignment at snd_hdac_i915_exit()
to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: alsa-hda-clear-the-leftover-component-assignment-at-snd_hdac_i915_exit.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From faafd03d23c913633d2ef7e6ffebdce01b164409 Mon Sep 17 00:00:00 2001
From: Takashi Iwai tiwai@suse.de Date: Tue, 29 Mar 2016 12:29:24 +0200 Subject: ALSA: hda - Clear the leftover component assignment at snd_hdac_i915_exit()
From: Takashi Iwai tiwai@suse.de
commit faafd03d23c913633d2ef7e6ffebdce01b164409 upstream.
The commit [d745f5e7b8b2: ALSA: hda - Add the pin / port mapping on Intel ILK and VLV] introduced a WARN_ON() to check the pointer for avoiding the double initializations. But hdac_acomp pointer wasn't cleared at snd_hdac_i915_exit(), thus after reloading the HD-audio driver, it may result in the false positive warning. This patch makes sure to clear the leftover pointer at exit.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94736 Reported-by: Daniela Doras-prodan daniela.doras-prodan@intel.com Signed-off-by: Takashi Iwai tiwai@suse.de Cc: Kouta Okamoto kouta.okamoto@toshiba.co.jp Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- sound/hda/hdac_i915.c | 1 + 1 file changed, 1 insertion(+)
--- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -273,6 +273,7 @@ int snd_hdac_i915_exit(struct hdac_bus *
kfree(acomp); bus->audio_component = NULL; + hdac_acomp = NULL;
return 0; }
Patches currently in stable-queue which might be from tiwai@suse.de are
queue-4.4/alsa-hda-degrade-i915-binding-failure-message.patch queue-4.4/alsa-hda-add-support-for-docking-station-for-hp-820-g2.patch queue-4.4/alsa-hda-enable-audio-component-for-old-intel-pch-devices.patch queue-4.4/alsa-hda-add-support-for-docking-station-for-hp-840-g3.patch queue-4.4/alsa-hda-clear-the-leftover-component-assignment-at-snd_hdac_i915_exit.patch queue-4.4/alsa-hda-fix-yet-another-i915-pointer-leftover-in-error-path.patch