linux-kernel - Re: [PATCH 6/6] phy: stm32: use NULL instead of zero

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Date:   Wed, 8 Jul 2020 15:35:25 +0200
From:   Amelie DELAUNAY <amelie.delaunay@...com>
To:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/6] phy: stm32: use NULL instead of zero

Hi Vinod,

On 7/8/20 3:28 PM, Vinod Koul wrote:
> devm_clk_get() and devm_reset_control_get() expect a const char *id for
> the last arg, but a value of zero was provided. This results in below
> sparse warning:
> 
> drivers/phy/st/phy-stm32-usbphyc.c:330:42: warning: Using plain integer as NULL pointer
> drivers/phy/st/phy-stm32-usbphyc.c:343:52: warning: Using plain integer as NULL pointer
> 
> Instead of zero, use NULL
> 
> Cc: Amelie Delaunay <amelie.delaunay@...com>
> Signed-off-by: Vinod Koul <vkoul@...nel.org>

Reviewed-by: Amelie Delaunay <amelie.delaunay@...com>

Thanks!

Regards,
Amelie

> ---
>   drivers/phy/st/phy-stm32-usbphyc.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/phy/st/phy-stm32-usbphyc.c b/drivers/phy/st/phy-stm32-usbphyc.c
> index 56bdea4b0bd9..2b3639cba51a 100644
> --- a/drivers/phy/st/phy-stm32-usbphyc.c
> +++ b/drivers/phy/st/phy-stm32-usbphyc.c
> @@ -327,7 +327,7 @@ static int stm32_usbphyc_probe(struct platform_device *pdev)
>   	if (IS_ERR(usbphyc->base))
>   		return PTR_ERR(usbphyc->base);
>   
> -	usbphyc->clk = devm_clk_get(dev, 0);
> +	usbphyc->clk = devm_clk_get(dev, NULL);
>   	if (IS_ERR(usbphyc->clk)) {
>   		ret = PTR_ERR(usbphyc->clk);
>   		dev_err(dev, "clk get failed: %d\n", ret);
> @@ -340,7 +340,7 @@ static int stm32_usbphyc_probe(struct platform_device *pdev)
>   		return ret;
>   	}
>   
> -	usbphyc->rst = devm_reset_control_get(dev, 0);
> +	usbphyc->rst = devm_reset_control_get(dev, NULL);
>   	if (!IS_ERR(usbphyc->rst)) {
>   		reset_control_assert(usbphyc->rst);
>   		udelay(2);
>