[ARM] pxa: Fix PXA27x suspend type validation, remove pxa_pm_prepare()

pxa_pm_prepare() tried to validate the suspend method type.  As
noted in previous commits:
	eb9289eb20df6b54214c45ac7c6bf5179a149026
	9c372d06ce9ddf65e1393f9ea22a6d6bd5f96b42
	e8c9c502690efd24b7055bf608e7a3c34216848b

the checking of the suspend type in the 'prepare' method is the
wrong place to do this; use the 'valid' method instead.  This
means that pxa_pm_prepare() can be entirely removed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 6 insertions, 27 deletions

diff --git a/arch/arm/common/sharpsl_pm.c b/arch/arm/common/sharpsl_pm.c
index 62cb50816cc6..111a7fa5debe 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 8560439ba0b9..fe29c6e03a4f 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 be6ca7d3afa2..ac40fa5f7709 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