| Message ID | 1502203798-31997-1-git-send-email-bianpan2016@163.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c index aa8f9fd..54bb716 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c @@ -75,7 +75,7 @@ void mtk_mdp_comp_clock_on(struct device *dev, struct mtk_mdp_comp *comp) } for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { - if (!comp->clk[i]) + if (IS_ERR(comp->clk[i])) continue; err = clk_prepare_enable(comp->clk[i]); if (err) @@ -90,7 +90,7 @@ void mtk_mdp_comp_clock_off(struct device *dev, struct mtk_mdp_comp *comp) int i; for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { - if (!comp->clk[i]) + if (IS_ERR(comp->clk[i])) continue; clk_disable_unprepare(comp->clk[i]); }
Function of_clk_get() returns an ERR_PTR on failures. In file mtk_mdp_commp.c, its return value is checked against NULL. Such checks cannot prevent from accessing bad memory. This patch replaces the NULL checks with IS_ERR checks. Signed-off-by: Pan Bian <bianpan2016@163.com> --- drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)