linux-kernel - Re: [PATCH -next] ARM: s3c: fix return value check in s3c_usb_otgphy

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Message-ID: <20200728124706.GA32233@kozik-lap>
Date:   Tue, 28 Jul 2020 14:47:06 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Qinglang Miao <miaoqinglang@...wei.com>
Cc:     Kukjin Kim <kgene@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] ARM: s3c: fix return value check in
 s3c_usb_otgphy_init()

On Tue, Jul 28, 2020 at 10:27:56AM +0800, Qinglang Miao wrote:
> the function clk_get() returns ERR_PTR() in case of error and
> never returns NULL. So there's no need to test whether xusbxti
> is NULL, just remove the redundant part in the return value check.
> 
> Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
> ---
>  arch/arm/mach-s3c64xx/setup-usb-phy.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Looks good, thanks. I don't plan to take anything before merge window
(it is quite late in the cycle) so I will apply it after the window.

Best regards,
Krzysztof

> diff --git a/arch/arm/mach-s3c64xx/setup-usb-phy.c b/arch/arm/mach-s3c64xx/setup-usb-phy.c
> index d6b0e3b26..99d743884 100644
> --- a/arch/arm/mach-s3c64xx/setup-usb-phy.c
> +++ b/arch/arm/mach-s3c64xx/setup-usb-phy.c
> @@ -31,7 +31,7 @@ static int s3c_usb_otgphy_init(struct platform_device *pdev)
>  	phyclk = readl(S3C_PHYCLK) & ~S3C_PHYCLK_CLKSEL_MASK;
>  
>  	xusbxti = clk_get(&pdev->dev, "xusbxti");
> -	if (xusbxti && !IS_ERR(xusbxti)) {
> +	if (!IS_ERR(xusbxti)) {
>  		switch (clk_get_rate(xusbxti)) {
>  		case 12 * MHZ:
>  			phyclk |= S3C_PHYCLK_CLKSEL_12M;
> -- 
> 2.25.1
>