ARM: OMAP2+: powerdomain: pwrdm_for_each_clkdm iterate only valid clkdms

No need to invoke callback when the clkdm pointer is NULL.

Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index faebd5f076af..f391948c76b9 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -546,7 +546,8 @@ int pwrdm_for_each_clkdm(struct powerdomain *pwrdm,
                 return -EINVAL;
 
         for (i = 0; i < PWRDM_MAX_CLKDMS && !ret; i++)
-                ret = (*fn)(pwrdm, pwrdm->pwrdm_clkdms[i]);
+                if (pwrdm->pwrdm_clkdms[i])
+                        ret = (*fn)(pwrdm, pwrdm->pwrdm_clkdms[i]);
 
         return ret;
 }