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Commit 13acc291 authored by Chander Kashyap's avatar Chander Kashyap Committed by Kukjin Kim
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ARM: SAMSUNG: Add check for NULL in clock interface 



The clock instance parameter in Samsung clock interface is not being checked
for NULL pointers. Add checks for NULL pointers.

Signed-off-by: default avatarChander Kashyap <chander.kashyap@linaro.org>
Acked-by: default avatarThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 377acfbb

arch/arm/plat-samsung/clock.c

+4 −4
Original line number Diff line number Diff line
@@ -119,7 +119,7 @@ void clk_disable(struct clk *clk) 


unsigned long clk_get_rate(struct clk *clk)

{

	if (IS_ERR(clk))

	if (IS_ERR_OR_NULL(clk))

		return 0;



	if (clk->rate != 0)
@@ -136,7 +136,7 @@ unsigned long clk_get_rate(struct clk *clk) 


long clk_round_rate(struct clk *clk, unsigned long rate)

{

	if (!IS_ERR(clk) && clk->ops && clk->ops->round_rate)

	if (!IS_ERR_OR_NULL(clk) && clk->ops && clk->ops->round_rate)

		return (clk->ops->round_rate)(clk, rate);



	return rate;
@@ -146,7 +146,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate) 
{

	int ret;



	if (IS_ERR(clk))

	if (IS_ERR_OR_NULL(clk))

		return -EINVAL;



	/* We do not default just do a clk->rate = rate as
@@ -175,7 +175,7 @@ int clk_set_parent(struct clk *clk, struct clk *parent) 
{

	int ret = 0;



	if (IS_ERR(clk))

	if (IS_ERR_OR_NULL(clk) || IS_ERR_OR_NULL(parent))

		return -EINVAL;



	spin_lock(&clocks_lock);