linux-kernel - Re: [PATCH v5 4/9] phy: phy-can-transceiver: Drop the gpio desc check

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Message-ID: <aLmfuA6kj1qq7Cec@lizhi-Precision-Tower-5810>
Date: Thu, 4 Sep 2025 10:18:32 -0400
From: Frank Li <Frank.li@....com>
To: Peng Fan <peng.fan@....com>
Cc: Marc Kleine-Budde <mkl@...gutronix.de>,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Aswath Govindraju <a-govindraju@...com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, Haibo Chen <haibo.chen@....com>,
	linux-can@...r.kernel.org, linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 4/9] phy: phy-can-transceiver: Drop the gpio desc check

On Thu, Sep 04, 2025 at 04:36:47PM +0800, Peng Fan wrote:
> gpiod_set_value_cansleep has an internal check on gpio_desc using
> 'VALIDATE_DESC(desc)', the check before invoking gpiod_set_value_cansleep
> could be removed.
>
> Signed-off-by: Peng Fan <peng.fan@....com>

Reviewed-by: Frank Li <Frank.Li@....com>

> ---
>  drivers/phy/phy-can-transceiver.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/phy/phy-can-transceiver.c b/drivers/phy/phy-can-transceiver.c
> index f06b1df76ada023f432dce892c3346f45397ab54..b7d75a78d9242e2003660a87d2d4c9f784aea523 100644
> --- a/drivers/phy/phy-can-transceiver.c
> +++ b/drivers/phy/phy-can-transceiver.c
> @@ -46,10 +46,8 @@ static int can_transceiver_phy_power_on(struct phy *phy)
>  			return ret;
>  		}
>  	}
> -	if (can_transceiver_phy->standby_gpio)
> -		gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 0);
> -	if (can_transceiver_phy->enable_gpio)
> -		gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 1);
> +	gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 0);
> +	gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 1);
>
>  	return 0;
>  }
> @@ -59,10 +57,8 @@ static int can_transceiver_phy_power_off(struct phy *phy)
>  {
>  	struct can_transceiver_phy *can_transceiver_phy = phy_get_drvdata(phy);
>
> -	if (can_transceiver_phy->standby_gpio)
> -		gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 1);
> -	if (can_transceiver_phy->enable_gpio)
> -		gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 0);
> +	gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 1);
> +	gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 0);
>  	if (can_transceiver_phy->priv->mux_state)
>  		mux_state_deselect(can_transceiver_phy->priv->mux_state);
>
>
> --
> 2.37.1
>