[PATCH] OMAP: Dereference of NULL autodep in _autodep_lookup()

[Roel Kluin <roel.kluin@gmail.com>]

Don't dereference autodep when it's NULL. In _autodep_lookup() an
ERR_PTR(-ENOENT) is assigned to autodep->pwrdm.ptr if pwrdm_lookup() fails.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---

Alternatively we could do:

-		for (autodep = autodeps; autodep->pwrdm.ptr; autodep++)
+		for (autodep = autodeps; !IS_ERR(autodep->pwrdm.ptr); autodep++)

...but considering how _clkdm_add_autodeps() traverses trough the autodeps it
appears that we want to ignore failures. Correct?

Roel

diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index dd285f0..8f359c1 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -64,9 +64,6 @@ static void _autodep_lookup(struct clkdm_pwrdm_autodep *autodep)
 {
 	struct powerdomain *pwrdm;
 
-	if (!autodep)
-		return;
-
 	if (!omap_chip_is(autodep->omap_chip))
 		return;
 
@@ -211,7 +208,7 @@ void clkdm_init(struct clockdomain **clkdms,
 
 	autodeps = init_autodeps;
 	if (autodeps)
-		for (autodep = autodeps; autodep->pwrdm.ptr; autodep++)
+		for (autodep = autodeps; autodep; autodep++)
 			_autodep_lookup(autodep);
 }