PM: Rework struct platform_suspend_ops

There is no reason why the .prepare() and .finish() methods in 'struct
platform_suspend_ops' should take any arguments, since architectures don't use
these methods' argument in any practically meaningful way (ie.  either the
target system sleep state is conveyed to the platform by .set_target(), or
there is only one suspend state supported and it is indicated to the PM core
by .valid(), or .prepare() and .finish() aren't defined at all).   There also
is no reason why .finish() should return any result.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 6 insertions, 34 deletions

diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c
index 8db38dd..3bf01e2 100644
--- a/arch/arm/mach-omap1/pm.c
+++ b/arch/arm/mach-omap1/pm.c
@@ -599,27 +599,15 @@ static void (*saved_idle)(void) = NULL;
 
 /*
  *	omap_pm_prepare - Do preliminary suspend work.
- *	@state:		suspend state we're entering.
  *
  */
-static int omap_pm_prepare(suspend_state_t state)
+static int omap_pm_prepare(void)
 {
-	int error = 0;
-
 	/* We cannot sleep in idle until we have resumed */
 	saved_idle = pm_idle;
 	pm_idle = NULL;
 
-	switch (state)
-	{
-	case PM_SUSPEND_STANDBY:
-	case PM_SUSPEND_MEM:
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return error;
+	return 0;
 }
 
 
@@ -647,16 +635,14 @@ static int omap_pm_enter(suspend_state_t state)
 
 /**
  *	omap_pm_finish - Finish up suspend sequence.
- *	@state:		State we're coming out of.
  *
  *	This is called after we wake back up (or if entering the sleep state
  *	failed).
  */
 
-static int omap_pm_finish(suspend_state_t state)
+static void omap_pm_finish(void)
 {
 	pm_idle = saved_idle;
-	return 0;
 }
 
 
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 9aaa7a2..baf7d82 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -70,25 +70,12 @@ void omap2_pm_idle(void)
 	local_irq_enable();
 }
 
-static int omap2_pm_prepare(suspend_state_t state)
+static int omap2_pm_prepare(void)
 {
-	int error = 0;
-
 	/* We cannot sleep in idle until we have resumed */
 	saved_idle = pm_idle;
 	pm_idle = NULL;
-
-	switch (state)
-	{
-	case PM_SUSPEND_STANDBY:
-	case PM_SUSPEND_MEM:
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	return error;
+	return 0;
 }
 
 #define INT0_WAKE_MASK	(OMAP_IRQ_BIT(INT_24XX_GPIO_BANK1) |	\
@@ -356,10 +343,9 @@ static int omap2_pm_enter(suspend_state_t state)
 	return ret;
 }
 
-static int omap2_pm_finish(suspend_state_t state)
+static void omap2_pm_finish(void)
 {
 	pm_idle = saved_idle;
-	return 0;
 }
 
 static struct platform_suspend_ops omap_pm_ops = {