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authorYoung Xiao <92siuyang@gmail.com>2019-05-29 04:43:58 +0200
committerLinus Walleij <linus.walleij@linaro.org>2019-06-08 01:29:42 +0200
commitf38b5069234937ae818d6a39fd4dc03d003b5565 (patch)
tree374a0cfeecf4360510bb0013fa37aa524702116f /drivers/pinctrl/bcm/pinctrl-ns2-mux.c
parentdt-bindings: imx: Correct pinfunc head file path for i.MX8MM (diff)
downloadlinux-f38b5069234937ae818d6a39fd4dc03d003b5565.tar.xz
linux-f38b5069234937ae818d6a39fd4dc03d003b5565.zip
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 <92siuyang@gmail.com> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/bcm/pinctrl-ns2-mux.c')
-rw-r--r--drivers/pinctrl/bcm/pinctrl-ns2-mux.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pinctrl/bcm/pinctrl-ns2-mux.c b/drivers/pinctrl/bcm/pinctrl-ns2-mux.c
index 4b5cf0e0f16e..2bf6af7df7d9 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,
resource_size(res));
if (!pinctrl->base1) {