linux-kernel - [PATCH v1] drivers/pinctrl/freescale: Use kmemdup_array instead of kmemdup for multiple allocation

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Message-Id: <20240823013959.6281-1-shenlichuan@vivo.com>
Date: Fri, 23 Aug 2024 09:39:59 +0800
From: Shen Lichuan <shenlichuan@...o.com>
To: aisheng.dong@....com,
	festevam@...il.com,
	shawnguo@...nel.org,
	ping.bai@....com,
	linus.walleij@...aro.org,
	s.hauer@...gutronix.de
Cc: kernel@...gutronix.de,
	linux-gpio@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Shen Lichuan <shenlichuan@...o.com>
Subject: [PATCH v1] drivers/pinctrl/freescale: Use kmemdup_array instead of kmemdup for multiple allocation

Let the kememdup_array() take care about
multiplication and possible overflows.

Signed-off-by: Shen Lichuan <shenlichuan@...o.com>
---
 drivers/pinctrl/freescale/pinctrl-imx-scmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/freescale/pinctrl-imx-scmi.c b/drivers/pinctrl/freescale/pinctrl-imx-scmi.c
index 2991047535bc..8f15c4c4dc44 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx-scmi.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx-scmi.c
@@ -130,7 +130,7 @@ static int pinctrl_scmi_imx_dt_node_to_map(struct pinctrl_dev *pctldev,
 			cfg[j++] = pinconf_to_config_packed(IMX_SCMI_PIN_DAISY_CFG, input_val);
 		}
 
-		configs = kmemdup(cfg, ncfg * sizeof(unsigned long), GFP_KERNEL);
+		configs = kmemdup_array(cfg, ncfg, sizeof(unsigned long), GFP_KERNEL);
 
 		new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
 		new_map[i].data.configs.group_or_pin = pin_get_name(pctldev, pin_id);
-- 
2.17.1