linux-kernel - [PATCH 3/4] pinctrl: qcom: sc8180x: use kcalloc() instead of kzalloc()

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Message-Id: <20250819143935.372084-4-rongqianfeng@vivo.com>
Date: Tue, 19 Aug 2025 22:39:34 +0800
From: Qianfeng Rong <rongqianfeng@...o.com>
To: Bjorn Andersson <andersson@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-arm-msm@...r.kernel.org (open list:ARM/QUALCOMM MAILING LIST),
	linux-gpio@...r.kernel.org (open list:PIN CONTROL SUBSYSTEM),
	linux-kernel@...r.kernel.org (open list)
Cc: Qianfeng Rong <rongqianfeng@...o.com>
Subject: [PATCH 3/4] pinctrl: qcom: sc8180x: use kcalloc() instead of kzalloc()

Use devm_kcalloc() in sc8180x_pinctrl_add_tile_resources() to gain built-in
overflow protection, making memory allocation safer when calculating
allocation size compared to explicit multiplication.

Signed-off-by: Qianfeng Rong <rongqianfeng@...o.com>
---
 drivers/pinctrl/qcom/pinctrl-sc8180x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/qcom/pinctrl-sc8180x.c b/drivers/pinctrl/qcom/pinctrl-sc8180x.c
index 26dd165d1543..ae5134fdebd9 100644
--- a/drivers/pinctrl/qcom/pinctrl-sc8180x.c
+++ b/drivers/pinctrl/qcom/pinctrl-sc8180x.c
@@ -1634,7 +1634,7 @@ static int sc8180x_pinctrl_add_tile_resources(struct platform_device *pdev)
 		return 0;
 
 	/* Allocate for new resources */
-	nres = devm_kzalloc(&pdev->dev, sizeof(*nres) * nres_num, GFP_KERNEL);
+	nres = devm_kcalloc(&pdev->dev, nres_num, sizeof(*nres), GFP_KERNEL);
 	if (!nres)
 		return -ENOMEM;
 
-- 
2.34.1