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

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

diff --git a/drivers/pinctrl/pinctrl-zynqmp.c b/drivers/pinctrl/pinctrl-zynqmp.c
index 71eaac81deb1..aba129ead04c 100644
--- a/drivers/pinctrl/pinctrl-zynqmp.c
+++ b/drivers/pinctrl/pinctrl-zynqmp.c
@@ -918,7 +918,7 @@ static int versal_pinctrl_prepare_pin_desc(struct device *dev,
 	if (ret)
 		return ret;
 
-	pins = devm_kzalloc(dev, sizeof(*pins) * *npins, GFP_KERNEL);
+	pins = devm_kcalloc(dev, *npins, sizeof(*pins), GFP_KERNEL);
 	if (!pins)
 		return -ENOMEM;
 
-- 
2.34.1

On 8/19/25 16:39, Qianfeng Rong wrote:
> Use devm_kcalloc() in versal_pinctrl_prepare_pin_desc() to gain built-in
> overflow protection, making memory allocation safer when calculating
> allocation size compared to explicit multiplication.
> 
> Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
> ---
>   drivers/pinctrl/pinctrl-zynqmp.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-zynqmp.c b/drivers/pinctrl/pinctrl-zynqmp.c
> index 71eaac81deb1..aba129ead04c 100644
> --- a/drivers/pinctrl/pinctrl-zynqmp.c
> +++ b/drivers/pinctrl/pinctrl-zynqmp.c
> @@ -918,7 +918,7 @@ static int versal_pinctrl_prepare_pin_desc(struct device *dev,
>   	if (ret)
>   		return ret;
>   
> -	pins = devm_kzalloc(dev, sizeof(*pins) * *npins, GFP_KERNEL);
> +	pins = devm_kcalloc(dev, *npins, sizeof(*pins), GFP_KERNEL);
>   	if (!pins)
>   		return -ENOMEM;
>   

Acked-by: Michal Simek <michal.simek@amd.com>

Thanks,
Michal