[PATCH] DRIVER MODEL: Get rid of the obsolete tri-level suspend/resume callbacks

In PM v1, all devices were called at SUSPEND_DISABLE level.  Then
all devices were called at SUSPEND_SAVE_STATE level, and finally
SUSPEND_POWER_DOWN level.  However, with PM v2, to maintain
compatibility for platform devices, I arranged for the PM v2
suspend/resume callbacks to call the old PM v1 suspend/resume
callbacks three times with each level in order so that existing
drivers continued to work.

Since this is obsolete infrastructure which is no longer necessary,
we can remove it.  Here's an (untested) patch to do exactly that.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 10 deletions

diff --git a/sound/core/init.c b/sound/core/init.c
index c72a79115cca..59202de1d2ce 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -676,8 +676,8 @@ struct snd_generic_device {
 #define SND_GENERIC_NAME	"snd_generic"
 
 #ifdef CONFIG_PM
-static int snd_generic_suspend(struct device *dev, pm_message_t state, u32 level);
-static int snd_generic_resume(struct device *dev, u32 level);
+static int snd_generic_suspend(struct device *dev, pm_message_t state);
+static int snd_generic_resume(struct device *dev);
 #endif
 
 /* initialized in sound.c */
@@ -818,13 +818,10 @@ int snd_card_set_pm_callback(snd_card_t *card,
 
 #ifdef CONFIG_SND_GENERIC_DRIVER
 /* suspend/resume callbacks for snd_generic platform device */
-static int snd_generic_suspend(struct device *dev, pm_message_t state, u32 level)
+static int snd_generic_suspend(struct device *dev, pm_message_t state)
 {
 	snd_card_t *card;
 
-	if (level != SUSPEND_DISABLE)
-		return 0;
-
 	card = get_snd_generic_card(dev);
 	if (card->power_state == SNDRV_CTL_POWER_D3hot)
 		return 0;
@@ -834,13 +831,10 @@ static int snd_generic_suspend(struct device *dev, pm_message_t state, u32 level
 	return 0;
 }
 
-static int snd_generic_resume(struct device *dev, u32 level)
+static int snd_generic_resume(struct device *dev)
 {
 	snd_card_t *card;
 
-	if (level != RESUME_ENABLE)
-		return 0;
-
 	card = get_snd_generic_card(dev);
 	if (card->power_state == SNDRV_CTL_POWER_D0)
 		return 0;