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authorHui Wang <hui.wang@canonical.com>2021-06-02 22:54:24 +0800
committerTakashi Iwai <tiwai@suse.de>2021-06-03 09:40:28 +0200
commitb8b90c17602689eeaa5b219d104bbc215d1225cc (patch)
treee17a2ae3a2a3de126e3e4012d3ace8049787a04e /sound
parent9c1fe96bded935369f8340c2ac2e9e189f697d5d (diff)
downloadlinux-b8b90c17602689eeaa5b219d104bbc215d1225cc.tar.bz2
ALSA: hda: update the power_state during the direct-complete
The patch_realtek.c needs to check if the power_state.event equals PM_EVENT_SUSPEND, after using the direct-complete, the suspend() and resume() will be skipped if the codec is already rt_suspended, in this case, the patch_realtek.c will always get PM_EVENT_ON even the system is really resumed from S3. We could set power_state to PMSG_SUSPEND in the prepare(), if other PM functions are called before complete(), those functions will override power_state; if no other PM functions are called before complete(), we could know the suspend() and resume() are skipped since only S3 pm functions could be skipped by direct-complete, in this case set power_state to PMSG_RESUME in the complete(). This could guarantee the first time of calling hda_codec_runtime_resume() after complete() has the correct power_state. Fixes: 215a22ed31a1 ("ALSA: hda: Refactor codec PM to use direct-complete optimization") Cc: <stable@vger.kernel.org> Signed-off-by: Hui Wang <hui.wang@canonical.com> Link: https://lore.kernel.org/r/20210602145424.3132-1-hui.wang@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_codec.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index a31009afc025..5462f771c2f9 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2917,6 +2917,7 @@ static int hda_codec_runtime_resume(struct device *dev)
#ifdef CONFIG_PM_SLEEP
static int hda_codec_pm_prepare(struct device *dev)
{
+ dev->power.power_state = PMSG_SUSPEND;
return pm_runtime_suspended(dev);
}
@@ -2924,6 +2925,10 @@ static void hda_codec_pm_complete(struct device *dev)
{
struct hda_codec *codec = dev_to_hda_codec(dev);
+ /* If no other pm-functions are called between prepare() and complete() */
+ if (dev->power.power_state.event == PM_EVENT_SUSPEND)
+ dev->power.power_state = PMSG_RESUME;
+
if (pm_runtime_suspended(dev) && (codec->jackpoll_interval ||
hda_codec_need_resume(codec) || codec->forced_resume))
pm_request_resume(dev);