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From: Shailendra Verma <shailendra.v@samsung.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
	John Crispin <blogic@openwrt.org>,
	Henry Chen <henryc.chen@mediatek.com>,
	Daniel Kurtz <djkurtz@chromium.org>,
	Arnd Bergmann <arnd@arndb.de>,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
	p.shailesh@samsung.com, ashish.kalra@samsung.com,
	Shailendra Verma <shailendra.v@samsung.com>,
	Shailendra Verma <shailendra.capricorn@gmail.com>
Subject: [PATCH] Soc: mediatek - Fix possible NULL derefrence.
Date: Fri, 27 Jan 2017 16:47:48 +0530	[thread overview]
Message-ID: <1485515868-3671-1-git-send-email-shailendra.v@samsung.com> (raw)
In-Reply-To: CGME20170127111755epcas4p4f4bf0401e49ddd4563b0365b838d3dde@epcas4p4.samsung.com

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/soc/mediatek/mtk-pmic-wrap.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index a5f1093..c48db98 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1117,6 +1117,11 @@ static int pwrap_probe(struct platform_device *pdev)
 	const struct of_device_id *of_slave_id = NULL;
 	struct resource *res;
 
+	if (!of_id) {
+		dev_err(&pdev->dev, "Error: No device match found\n");
+		return -ENODEV;
+	}
+
 	if (pdev->dev.of_node->child)
 		of_slave_id = of_match_node(of_slave_match_tbl,
 					    pdev->dev.of_node->child);
-- 
1.7.9.5

WARNING: multiple messages have this Message-ID (diff)
From: shailendra.v@samsung.com (Shailendra Verma)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] Soc: mediatek - Fix possible NULL derefrence.
Date: Fri, 27 Jan 2017 16:47:48 +0530	[thread overview]
Message-ID: <1485515868-3671-1-git-send-email-shailendra.v@samsung.com> (raw)
In-Reply-To: CGME20170127111755epcas4p4f4bf0401e49ddd4563b0365b838d3dde@epcas4p4.samsung.com

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/soc/mediatek/mtk-pmic-wrap.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index a5f1093..c48db98 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1117,6 +1117,11 @@ static int pwrap_probe(struct platform_device *pdev)
 	const struct of_device_id *of_slave_id = NULL;
 	struct resource *res;
 
+	if (!of_id) {
+		dev_err(&pdev->dev, "Error: No device match found\n");
+		return -ENODEV;
+	}
+
 	if (pdev->dev.of_node->child)
 		of_slave_id = of_match_node(of_slave_match_tbl,
 					    pdev->dev.of_node->child);
-- 
1.7.9.5

       reply	other threads:[~2017-01-27 11:18 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20170127111755epcas4p4f4bf0401e49ddd4563b0365b838d3dde@epcas4p4.samsung.com>
2017-01-27 11:17 ` Shailendra Verma [this message]
2017-01-27 11:17   ` [PATCH] Soc: mediatek - Fix possible NULL derefrence Shailendra Verma
2017-05-10 11:34   ` Matthias Brugger
2017-05-10 11:34     ` Matthias Brugger

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