diff options
| author | Rander Wang <rander.wang@intel.com> | 2020-09-02 18:42:18 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-09-02 20:26:39 +0300 |
| commit | 13774d81f38538c5fa2924bdcdfa509155480fa6 (patch) | |
| tree | 10a3731da2af02d9af25485d1894b749c6fa6ffc /sound/hda/hdac_device.c | |
| parent | f804a324a41a880c1ab43cc5145d8b3e5790430d (diff) | |
| download | linux-13774d81f38538c5fa2924bdcdfa509155480fa6.tar.xz | |
ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled
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@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200902154218.1440441-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda/hdac_device.c')
| -rw-r--r-- | sound/hda/hdac_device.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c index 333220f0f8af..3e9e9ac804f6 100644 --- a/sound/hda/hdac_device.c +++ b/sound/hda/hdac_device.c @@ -127,6 +127,8 @@ EXPORT_SYMBOL_GPL(snd_hdac_device_init); void snd_hdac_device_exit(struct hdac_device *codec) { pm_runtime_put_noidle(&codec->dev); + /* keep balance of runtime PM child_count in parent device */ + pm_runtime_set_suspended(&codec->dev); snd_hdac_bus_remove_device(codec->bus, codec); kfree(codec->vendor_name); kfree(codec->chip_name); |