ARM: OMAP3: cpuidle - check the powerdomain lookup

At init time, check the powerdomains lookup is successful otherwise
exit the cpuidle driver init function with -ENODEV like what is done for the
omap3 cpuidle driver.

Signed-off-by: Daniel Lezcano <[email protected]>
Reviewed-by: Jean Pihet <[email protected]>
Tested-by: Kevin Hilman <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>

diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index f682e170325a15c5a0b698a661a62f3d53c30701..207bc1c7759f1bb66b986d0ff1dbadd8c2b01925 100644 (file)
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -363,6 +363,9 @@ int __init omap3_idle_init(void)
        per_pd = pwrdm_lookup("per_pwrdm");
        cam_pd = pwrdm_lookup("cam_pwrdm");
 
+       if (!mpu_pd || !core_pd || !per_pd || !cam_pd)
+               return -ENODEV;
+
        cpuidle_register_driver(&omap3_idle_driver);
 
        dev = &per_cpu(omap3_idle_dev, smp_processor_id());