From 84a85d3fef2e75b1fe9fc2af6f5267122555a1ed Mon Sep 17 00:00:00 2001 From: Haowen Bai Date: Thu, 21 Apr 2022 10:26:59 +0800 Subject: pinctrl: aspeed: Fix potential NULL dereference in aspeed_pinmux_set_mux() pdesc could be null but still dereference pdesc->name and it will lead to a null pointer access. So we move a null check before dereference. Signed-off-by: Haowen Bai Link: https://lore.kernel.org/r/1650508019-22554-1-git-send-email-baihaowen@meizu.com Signed-off-by: Linus Walleij --- drivers/pinctrl/aspeed/pinctrl-aspeed.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/pinctrl/aspeed') diff --git a/drivers/pinctrl/aspeed/pinctrl-aspeed.c b/drivers/pinctrl/aspeed/pinctrl-aspeed.c index c94e24aadf92..83d47ff1cea8 100644 --- a/drivers/pinctrl/aspeed/pinctrl-aspeed.c +++ b/drivers/pinctrl/aspeed/pinctrl-aspeed.c @@ -236,11 +236,11 @@ int aspeed_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int function, const struct aspeed_sig_expr **funcs; const struct aspeed_sig_expr ***prios; - pr_debug("Muxing pin %s for %s\n", pdesc->name, pfunc->name); - if (!pdesc) return -EINVAL; + pr_debug("Muxing pin %s for %s\n", pdesc->name, pfunc->name); + prios = pdesc->prios; if (!prios) -- cgit v1.2.3