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authorTero Kristo2020-09-07 11:25:58 +0300
committerStephen Boyd2020-09-22 13:00:07 -0700
commitcec4a609a88823084bf09cb2cdacda63a363593a (patch)
tree682695287063726c9a81935309890b19ce49aef9 /drivers/clk
parent4630ef134e41389a7170b05790c0ddcd88977b01 (diff)
clk: ti: autoidle: add checks against NULL pointer reference
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>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/ti/autoidle.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/clk/ti/autoidle.c b/drivers/clk/ti/autoidle.c
index 1cae226759dd..f6f8a409f148 100644
--- a/drivers/clk/ti/autoidle.c
+++ b/drivers/clk/ti/autoidle.c
@@ -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);