[ALSA] ac97 - Suppress power-saving mode on non-supporting drivers

Don't enable power-saving mode on drivers that don't support
it.  The supporting drivers set AC97_SCAP_POWER_SAVE to scaps
at creation of ac97 instance.
Currently enable on the following drivers: intel8x0, intel8x0m,
atiixp, atiixp-modem, via82xx and via82xx-modem.
Also, a bit clean up of power-saving stuff:
- Don't create an own workq
- Remove superfluous ifdefs

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

1 files changed, 1 insertions, 1 deletions

diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 5f7c78d9e379..5d3f0d8c0e61 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -375,6 +375,7 @@
 #define AC97_SCAP_DETECT_BY_VENDOR (1<<8) /* use vendor registers for read tests */
 #define AC97_SCAP_NO_SPDIF      (1<<9)  /* don't build SPDIF controls */
 #define AC97_SCAP_EAPD_LED      (1<<10) /* EAPD as mute LED */
+#define AC97_SCAP_POWER_SAVE    (1<<11) /* capable for aggresive power-saving */
 
 /* ac97->flags */
 #define AC97_HAS_PC_BEEP        (1<<0)  /* force PC Speaker usage */
@@ -511,7 +512,6 @@ struct snd_ac97 {
 
 #ifdef CONFIG_SND_AC97_POWER_SAVE
         unsigned int power_up;  /* power states */
-        struct workqueue_struct *power_workq;
         struct delayed_work power_work;
 #endif
         struct device dev;