[ALSA] hda-intel - Avoid unnecessary work scheduling

Avoid unnecessary work scheduling for power-off.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 7 insertions, 3 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 0b9029436bb4..b1eee9a044fe 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1664,6 +1664,7 @@ static void hda_call_codec_suspend(struct hda_codec *codec)
 #ifdef CONFIG_SND_HDA_POWER_SAVE
         cancel_delayed_work(&codec->power_work);
         codec->power_on = 0;
+        codec->power_transition = 0;
 #endif
 }
 
@@ -2211,7 +2212,7 @@ static void hda_keep_power_on(struct hda_codec *codec)
 void snd_hda_power_up(struct hda_codec *codec)
 {
         codec->power_count++;
-        if (codec->power_on)
+        if (codec->power_on || codec->power_transition)
                 return;
 
         codec->power_on = 1;
@@ -2219,16 +2220,19 @@ void snd_hda_power_up(struct hda_codec *codec)
                 codec->bus->ops.pm_notify(codec);
         hda_call_codec_resume(codec);
         cancel_delayed_work(&codec->power_work);
+        codec->power_transition = 0;
 }
 
 void snd_hda_power_down(struct hda_codec *codec)
 {
         --codec->power_count;
-        if (!codec->power_on || codec->power_count)
+        if (!codec->power_on || codec->power_count || codec->power_transition)
                 return;
-        if (power_save)
+        if (power_save) {
+                codec->power_transition = 1; /* avoid reentrance */
                 schedule_delayed_work(&codec->power_work,
                                       msecs_to_jiffies(power_save * 1000));
+        }
 }
 
 int snd_hda_check_amp_list_power(struct hda_codec *codec,