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Date:   Wed, 29 May 2019 10:43:58 +0800
From:   Young Xiao <>
Cc:     Young Xiao <>
Subject: [PATCH] pinctrl: ns2: Fix potential NULL dereference

platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.

Signed-off-by: Young Xiao <>
 drivers/pinctrl/bcm/pinctrl-ns2-mux.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/bcm/pinctrl-ns2-mux.c b/drivers/pinctrl/bcm/pinctrl-ns2-mux.c
index 4b5cf0e..2bf6af7 100644
--- a/drivers/pinctrl/bcm/pinctrl-ns2-mux.c
+++ b/drivers/pinctrl/bcm/pinctrl-ns2-mux.c
@@ -1048,6 +1048,8 @@ static int ns2_pinmux_probe(struct platform_device *pdev)
 		return PTR_ERR(pinctrl->base0);
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	if (!res)
+		return -EINVAL;
 	pinctrl->base1 = devm_ioremap_nocache(&pdev->dev, res->start,
 	if (!pinctrl->base1) {

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