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clk: ti: autoidle: add checks against NULL pointer reference

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The clk pointer passed to omap2_clk_(deny|allow)_idle can be NULL, so
add checks for this.

Reported-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907082600.454-2-t-kristo@ti.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Tero Kristo 2020-09-07 11:25:58 +03:00 committed by Stephen Boyd
parent 4630ef134e
commit cec4a609a8
1 changed files with 12 additions and 2 deletions
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14
drivers/clk/ti/autoidle.c
View file

@ -82,7 +82,12 @@ static int _omap2_clk_allow_idle(struct clk_hw_omap *clk)
*/
int omap2_clk_deny_idle(struct clk *clk)
{
struct clk_hw *hw = __clk_get_hw(clk);
struct clk_hw *hw;
if (!clk)
return -EINVAL;
hw = __clk_get_hw(clk);
if (omap2_clk_is_hw_omap(hw)) {
struct clk_hw_omap *c = to_clk_hw_omap(hw);
@ -101,7 +106,12 @@ int omap2_clk_deny_idle(struct clk *clk)
*/
int omap2_clk_allow_idle(struct clk *clk)
{
struct clk_hw *hw = __clk_get_hw(clk);
struct clk_hw *hw;
if (!clk)
return -EINVAL;
hw = __clk_get_hw(clk);
if (omap2_clk_is_hw_omap(hw)) {
struct clk_hw_omap *c = to_clk_hw_omap(hw);