[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/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index 936c3cf16936..c155e1f3a0e5 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -830,7 +830,7 @@ static int __devinit snd_intel8x0_mixer(struct intel8x0m *chip, int ac97_clock)
         memset(&ac97, 0, sizeof(ac97));
         ac97.private_data = chip;
         ac97.private_free = snd_intel8x0_mixer_free_ac97;
-        ac97.scaps = AC97_SCAP_SKIP_AUDIO;
+        ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
 
         glob_sta = igetdword(chip, ICHREG(GLOB_STA));