diff --git a/arch/arm/common/sharpsl_pm.c b/arch/arm/common/sharpsl_pm.c
index 62cb50816cc674655be18324ac1c83a005845081..111a7fa5debee4ace5a39f1aa5c50b2ab3927683 100644
--- a/arch/arm/common/sharpsl_pm.c
+++ b/arch/arm/common/sharpsl_pm.c
@@ -766,7 +766,6 @@ static void sharpsl_apm_get_power_status(struct apm_power_info *info)
 }
 
 static struct pm_ops sharpsl_pm_ops = {
-	.prepare	= pxa_pm_prepare,
 	.enter		= corgi_pxa_pm_enter,
 	.valid		= pm_valid_only_mem,
 };
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index 8560439ba0b909cc7c31e8c3cc8f31a728ee4c32..fe29c6e03a4f1658fec0a764ed0782dc54ab3cc4 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -106,18 +106,6 @@ EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
 
 #ifdef CONFIG_PM
 
-int pxa_pm_prepare(suspend_state_t state)
-{
-	switch (state) {
-	case PM_SUSPEND_MEM:
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
 void pxa_cpu_pm_enter(suspend_state_t state)
 {
 	extern void pxa_cpu_suspend(unsigned int);
@@ -135,7 +123,6 @@ void pxa_cpu_pm_enter(suspend_state_t state)
 }
 
 static struct pm_ops pxa25x_pm_ops = {
-	.prepare	= pxa_pm_prepare,
 	.enter		= pxa_pm_enter,
 	.valid		= pm_valid_only_mem,
 };
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index be6ca7d3afa28f1bd50fa72c57b76859f3ec2e34..ac40fa5f7709e7a16d1200ed7d1afc96e026541b 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -123,17 +123,6 @@ EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
 
 #ifdef CONFIG_PM
 
-int pxa_pm_prepare(suspend_state_t state)
-{
-	switch (state) {
-	case PM_SUSPEND_MEM:
-	case PM_SUSPEND_STANDBY:
-		return 0;
-	default:
-		return -EINVAL;
-	}
-}
-
 void pxa_cpu_pm_enter(suspend_state_t state)
 {
 	extern void pxa_cpu_standby(void);
@@ -163,10 +152,14 @@ void pxa_cpu_pm_enter(suspend_state_t state)
 	}
 }
 
+static int pxa27x_pm_valid(suspend_state_t state)
+{
+	return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY;
+}
+
 static struct pm_ops pxa27x_pm_ops = {
-	.prepare	= pxa_pm_prepare,
 	.enter		= pxa_pm_enter,
-	.valid		= pm_valid_only_mem,
+	.valid		= pxa27x_pm_valid,
 };
 #endif