On Thu, Mar 17, 2022 at 02:58:51PM +0800, Jialin Zhang wrote:
> In case of error, the function devm_platform_ioremap_resource()
> returns ERR_PTR() and never returns NULL. The NULL test in the
> return value check should be replaced with IS_ERR().
Right.
>
> Fixes: a1d1e0e3d80a ("pinctrl: nuvoton: Add driver for WPCM450")
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Jialin Zhang <zhangjialin11@xxxxxxxxxx>
> ---
> drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> index 661aa963e3fc..a71b684b9b44 100644
> --- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> +++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> @@ -1019,8 +1019,9 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> int ret;
>
> pctrl->gpio_base = devm_platform_ioremap_resource(pdev, 0);
> - if (!pctrl->gpio_base)
> - return dev_err_probe(dev, -ENOMEM, "Resource fail for GPIO controller\n");
> + if (IS_ERR(pctrl->gpio_base))
> + return dev_err_probe(dev, PTR_ERR(pctrl->gpio_base),
> + "Resource fail for GPIO controller\n");
>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>
Thanks!
Jonathan
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