[PATCH] ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled

[Takashi Iwai]

On Wed, 02 Sep 2020 17:42:18 +0200,
Kai Vehmanen wrote:
> 
> From: Rander Wang <rander.wang at intel.com>
> 
> In snd_hdac_device_init pm_runtime_set_active is called to
> increase child_count in parent device. But when it is failed
> to build connection with GPU for one case that integrated
> graphic gpu is disabled, snd_hdac_ext_bus_device_exit will be
> invoked to clean up a HD-audio extended codec base device. At
> this time the child_count of parent is not decreased, which
> makes parent device can't get suspended.
> 
> This patch calls pm_runtime_set_suspended to decrease child_count
> in parent device in snd_hdac_device_exit to match with
> snd_hdac_device_init. pm_runtime_set_suspended can make sure that
> it will not decrease child_count if the device is already suspended.
> 
> Signed-off-by: Rander Wang <rander.wang at intel.com>
> Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
> Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>
> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
> Signed-off-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>

Applied now.  Thanks.


Takashi