From: Daniel Lezcano <daniel.lezcano@linaro.org>
Date: Fri, 4 May 2012 17:18:40 +0000 (+0200)
Subject: ARM: OMAP3: cpuidle - check the powerdomain lookup
X-Git-Tag: v3.5-rc1~156^2~10^2^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=daa37cee791722711bf15b9635d007014e73ad3d;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

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 <daniel.lezcano@linaro.org>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
---

diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index f682e17..207bc1c 100644
--- 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());