[ALSA] ac97_bus power management

This patch adds CONFIG_PM to the ac97_bus driver.

Signed-off-by: Martin Langer <martin-langer@gmx.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 4 insertions, 0 deletions

diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c
index 66de2c2f1554..7fa37e15f196 100644
--- a/sound/ac97_bus.c
+++ b/sound/ac97_bus.c
@@ -26,6 +26,7 @@ static int ac97_bus_match(struct device *dev, struct device_driver *drv)
         return 1;
 }
 
+#ifdef CONFIG_PM
 static int ac97_bus_suspend(struct device *dev, pm_message_t state)
 {
         int ret = 0;
@@ -45,12 +46,15 @@ static int ac97_bus_resume(struct device *dev)
 
         return ret;
 }
+#endif /* CONFIG_PM */
 
 struct bus_type ac97_bus_type = {
         .name           = "ac97",
         .match          = ac97_bus_match,
+#ifdef CONFIG_PM
         .suspend        = ac97_bus_suspend,
         .resume         = ac97_bus_resume,
+#endif /* CONFIG_PM */
 };
 
 static int __init ac97_bus_init(void)