Re: [PATCH -next] pinctrl: mediatek: paris: fix return value check in mtk_paris_pinctrl_probe()

[Sean Wang <sean.wang@xxxxxxxxxxxx>]

On Thu, 2018-09-20 at 06:21 +0000, Wei Yongjun wrote:
> In case of error, the function devm_kmalloc_array() returns NULL pointer
> not ERR_PTR(). The IS_ERR() test in the return value check should be
> replaced with NULL test.
> 
> Fixes: 805250982bb5 ("pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings")
> Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

Acked-by: Sean Wang <sean.wang@xxxxxxxxxxxx>

> ---
>  drivers/pinctrl/mediatek/pinctrl-paris.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
> index 4cf0fea..d217902 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-paris.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
> @@ -836,8 +836,8 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev,
>  
>  	hw->base = devm_kmalloc_array(&pdev->dev, hw->soc->nbase_names,
>  				      sizeof(*hw->base), GFP_KERNEL);
> -	if (IS_ERR(hw->base))
> -		return PTR_ERR(hw->base);
> +	if (!hw->base)
> +		return -ENOMEM;
>  
>  	for (i = 0; i < hw->soc->nbase_names; i++) {
>  		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> @@ -863,8 +863,8 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev,
>  	/* Copy from internal struct mtk_pin_desc to register to the core */
>  	pins = devm_kmalloc_array(&pdev->dev, hw->soc->npins, sizeof(*pins),
>  				  GFP_KERNEL);
> -	if (IS_ERR(pins))
> -		return PTR_ERR(pins);
> +	if (!pins)
> +		return -ENOMEM;
>  
>  	for (i = 0; i < hw->soc->npins; i++) {
>  		pins[i].number = hw->soc->pins[i].number;
>