[PATCH] regulator: qcom_rpm-regulator: add NULL check on of_match_device() return value

[Gustavo A. R. Silva]

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 
---
 drivers/regulator/qcom_rpm-regulator.c | 5 +
 1 file changed, 5 insertions(+)

diff --git a/drivers/regulator/qcom_rpm-regulator.c 
b/drivers/regulator/qcom_rpm-regulator.c
index 1b2acc4..88dc0b0 100644
--- a/drivers/regulator/qcom_rpm-regulator.c
+++ b/drivers/regulator/qcom_rpm-regulator.c
@@ -959,6 +959,11 @@ static int rpm_reg_probe(struct platform_device *pdev)
}
 
match = of_match_device(rpm_of_match, >dev);
+   if (!match) {
+   dev_err(>dev, "failed to match device\n");
+   return -ENODEV;
+   }
+
for (reg = match->data; reg->name; reg++) {
vreg = devm_kmalloc(>dev, sizeof(*vreg), GFP_KERNEL);
if (!vreg)
-- 
2.5.0

[PATCH] regulator: qcom_rpm-regulator: add NULL check on of_match_device() return value

[Gustavo A. R. Silva]

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 
---
 drivers/regulator/qcom_rpm-regulator.c | 5 +
 1 file changed, 5 insertions(+)

diff --git a/drivers/regulator/qcom_rpm-regulator.c 
b/drivers/regulator/qcom_rpm-regulator.c
index 1b2acc4..88dc0b0 100644
--- a/drivers/regulator/qcom_rpm-regulator.c
+++ b/drivers/regulator/qcom_rpm-regulator.c
@@ -959,6 +959,11 @@ static int rpm_reg_probe(struct platform_device *pdev)
}
 
match = of_match_device(rpm_of_match, >dev);
+   if (!match) {
+   dev_err(>dev, "failed to match device\n");
+   return -ENODEV;
+   }
+
for (reg = match->data; reg->name; reg++) {
vreg = devm_kmalloc(>dev, sizeof(*vreg), GFP_KERNEL);
if (!vreg)
-- 
2.5.0