[ARM] 4946/1: pxa3xx: Print an error if we refuse to suspend

The PXA3xx will not suspend if there are no wakeup sources configured.
Print a diagnostic message to make it easier for the user to see what's
happening.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index dc8d5ee9f286..604b68adc4ba 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -354,8 +354,10 @@ static void pxa3xx_cpu_pm_enter(suspend_state_t state)
         /*
          * Don't sleep if no wakeup sources are defined
          */
-        if (wakeup_src == 0)
+        if (wakeup_src == 0) {
+                printk(KERN_ERR "Not suspending: no wakeup sources\n");
                 return;
+        }
 
         switch (state) {
         case PM_SUSPEND_STANDBY: