[ALSA] hda-intel - Fix resume logic, when dynamic power managment is on

Comment in hda_intel.c states that 'the explicit resume is needed only
when POWER_SAVE isn't set', but this is not true.
There is no code that will automaticly power up the codec on resume,
but only code that powers it up when user accesses it. So if user
leaves a sound playing, codec will not be powered
To fix that I check if there are any codecs that should be powered
codec->power_count, and if so I power them up together with main
controller.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 13 insertions, 3 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 08104e2a3e99..e594de0b153e 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2787,7 +2787,6 @@ int snd_hda_suspend(struct hda_bus *bus, pm_message_t state)
         return 0;
 }
 
-#ifndef CONFIG_SND_HDA_POWER_SAVE
 /**
  * snd_hda_resume - resume the codecs
  * @bus: the HDA bus
@@ -2803,10 +2802,21 @@ int snd_hda_resume(struct hda_bus *bus)
         struct hda_codec *codec;
 
         list_for_each_entry(codec, &bus->codec_list, list) {
-                hda_call_codec_resume(codec);
+                if (snd_hda_codec_needs_resume(codec))
+                        hda_call_codec_resume(codec);
         }
         return 0;
 }
-#endif /* !CONFIG_SND_HDA_POWER_SAVE */
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+int snd_hda_codecs_inuse(struct hda_bus *bus)
+{
+        struct hda_codec *codec;
 
+        list_for_each_entry(codec, &bus->codec_list, list) {
+                if (snd_hda_codec_needs_resume(codec))
+                        return 1;
+        }
+        return 0;
+}
+#endif
 #endif