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| author | Dan Carpenter <dan.carpenter@linaro.org> | 2025-08-07 18:58:23 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-15 12:03:25 +0200 |
| commit | 24d61b6e23d2c7291c528dd43a0bf76b5c05c8f0 (patch) | |
| tree | 40c98ddaf276b0efe026ceef8bedd6fd638c8db3 /drivers/devfreq | |
| parent | 07d8d3b1ad44656bcf5adf9e6fe6dd8d3a45464e (diff) | |
| download | linux-24d61b6e23d2c7291c528dd43a0bf76b5c05c8f0.tar.gz linux-24d61b6e23d2c7291c528dd43a0bf76b5c05c8f0.tar.bz2 linux-24d61b6e23d2c7291c528dd43a0bf76b5c05c8f0.zip | |
PM / devfreq: mtk-cci: Fix potential error pointer dereference in probe()
[ Upstream commit fc33bf0e097c6834646b98a7b3da0ae5b617f0f9 ]
The drv->sram_reg pointer could be set to ERR_PTR(-EPROBE_DEFER) which
would lead to a error pointer dereference. Use IS_ERR_OR_NULL() to check
that the pointer is valid.
Fixes: e09bd5757b52 ("PM / devfreq: mtk-cci: Handle sram regulator probe deferral")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/aJTNHz8kk8s6Q2os@stanley.mountain/
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/mtk-cci-devfreq.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/devfreq/mtk-cci-devfreq.c b/drivers/devfreq/mtk-cci-devfreq.c index 22fe9e631f8a..5730076846e1 100644 --- a/drivers/devfreq/mtk-cci-devfreq.c +++ b/drivers/devfreq/mtk-cci-devfreq.c @@ -386,7 +386,8 @@ out_disable_cci_clk: out_free_resources: if (regulator_is_enabled(drv->proc_reg)) regulator_disable(drv->proc_reg); - if (drv->sram_reg && regulator_is_enabled(drv->sram_reg)) + if (!IS_ERR_OR_NULL(drv->sram_reg) && + regulator_is_enabled(drv->sram_reg)) regulator_disable(drv->sram_reg); return ret; |