[PATCH] Regulator - Fix possible NULL derefrence.

From	Shailendra Verma <shailendra.v@samsung.com>
Newsgroups	linux.kernel
Subject	[PATCH] Regulator - Fix possible NULL derefrence.
Date	2017-01-30 06:00 +0100
Message-ID	<t5cel-804-1@gated-at.bofh.it> (permalink)
References	<t5cel-804-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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of_match_device could return NULL, and so can cause a NULL
pointer dereference later.

Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
---
 drivers/regulator/qcom_rpm-regulator.c |    4 ++++
 drivers/regulator/qcom_smd-regulator.c |    4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/regulator/qcom_rpm-regulator.c b/drivers/regulator/qcom_rpm-regulator.c
index 1b2acc4..8a03db8 100644
--- a/drivers/regulator/qcom_rpm-regulator.c
+++ b/drivers/regulator/qcom_rpm-regulator.c
@@ -959,6 +959,10 @@ static int rpm_reg_probe(struct platform_device *pdev)
 	}
 
 	match = of_match_device(rpm_of_match, &pdev->dev);
+	if (!match) {
+		dev_err(&pdev->dev, "Error: No device match found\n");
+		return -ENODEV;
+	}
 	for (reg = match->data; reg->name; reg++) {
 		vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
 		if (!vreg)
diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qcom_smd-regulator.c
index 8ed46a9..967f2b6 100644
--- a/drivers/regulator/qcom_smd-regulator.c
+++ b/drivers/regulator/qcom_smd-regulator.c
@@ -468,6 +468,10 @@ static int rpm_reg_probe(struct platform_device *pdev)
 	}
 
 	match = of_match_device(rpm_of_match, &pdev->dev);
+	if (!match) {
+		dev_err(&pdev->dev, "Error: No device match found\n");
+		return -ENODEV;
+	}
 	for (reg = match->data; reg->name; reg++) {
 		vreg = devm_kzalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
 		if (!vreg)
-- 
1.7.9.5

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[PATCH] Regulator - Fix possible NULL derefrence. Shailendra Verma <shailendra.v@samsung.com> - 2017-01-30 06:00 +0100

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