Messages in this thread Patch in this message | | | Date | Fri, 7 Jul 2017 00:36:10 -0500 | From | "Gustavo A. R. Silva" <> | Subject | [PATCH] regulator: qcom_smd: add NULL check on of_match_device() return value |
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Check return value from call to of_match_device() in order to prevent a NULL pointer dereference.
In case of NULL print error message and return.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> --- drivers/regulator/qcom_smd-regulator.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qcom_smd-regulator.c index f35994a..940fe1b 100644 --- a/drivers/regulator/qcom_smd-regulator.c +++ b/drivers/regulator/qcom_smd-regulator.c @@ -570,6 +570,11 @@ static int rpm_reg_probe(struct platform_device *pdev) } match = of_match_device(rpm_of_match, &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "failed to match device\n"); + return -ENODEV; + } + for (reg = match->data; reg->name; reg++) { vreg = devm_kzalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL); if (!vreg) -- 2.5.0
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