Subject: Re: [PATCH net-next 8/9] net: phy: mediatek: Change mtk-ge-soc.c line wrapping

From: "Russell King (Oracle)" <[email-masked]>
Date: Fri, 4 Oct 2024 13:07:48 +0100

Hi,

On Fri, Oct 04, 2024 at 06:24:12PM +0800, Sky Huang wrote:
> diff --git a/drivers/net/phy/mediatek/mtk-ge-soc.c b/drivers/net/phy/mediatek/mtk-ge-soc.c
> index 26c2183..cb6838b 100644
> --- a/drivers/net/phy/mediatek/mtk-ge-soc.c
> +++ b/drivers/net/phy/mediatek/mtk-ge-soc.c
> @@ -295,7 +295,8 @@ static int cal_cycle(struct phy_device *phydev, int devad,
>  	ret = phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
>  					MTK_PHY_RG_AD_CAL_CLK, reg_val,
>  					reg_val & MTK_PHY_DA_CAL_CLK, 500,
> -					ANALOG_INTERNAL_OPERATION_MAX_US, false);
> +					ANALOG_INTERNAL_OPERATION_MAX_US,
> +					false);

This is fine.

>  	if (ret) {
>  		phydev_err(phydev, "Calibration cycle timeout\n");
>  		return ret;
> @@ -304,7 +305,7 @@ static int cal_cycle(struct phy_device *phydev, int devad,
>  	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CALIN,
>  			   MTK_PHY_DA_CALIN_FLAG);
>  	ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CAL_COMP) >>
> -			   MTK_PHY_AD_CAL_COMP_OUT_SHIFT;
> +	      MTK_PHY_AD_CAL_COMP_OUT_SHIFT;

Before cleaning this up, please first make it propagate any error code
correctly (a bug fix):

	ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CAL_COMP);
	if (ret < 0)
		return ret;

	ret >>= MTK_PHY_AD_CAL_COMP_OUT_SHIFT;

and then you won't need to change it in this patch. A better solution to
the shift would be to look at FIELD_GET().

>  	phydev_dbg(phydev, "cal_val: 0x%x, ret: %d\n", cal_val, ret);
>  
>  	return ret;
> @@ -394,38 +395,46 @@ static int tx_amp_fill_result(struct phy_device *phydev, u16 *buf)
>  	}
>  
>  	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TXVLD_DA_RG,
> -		       MTK_PHY_DA_TX_I2MPB_A_GBE_MASK, (buf[0] + bias[0]) << 10);
> +		       MTK_PHY_DA_TX_I2MPB_A_GBE_MASK,
> +		       (buf[0] + bias[0]) << 10);

Another cleanup would be to use FIELD_PREP() for these.

> -static const unsigned long supported_triggers = (BIT(TRIGGER_NETDEV_FULL_DUPLEX) |
> -						 BIT(TRIGGER_NETDEV_HALF_DUPLEX) |
> -						 BIT(TRIGGER_NETDEV_LINK)        |
> -						 BIT(TRIGGER_NETDEV_LINK_10)     |
> -						 BIT(TRIGGER_NETDEV_LINK_100)    |
> -						 BIT(TRIGGER_NETDEV_LINK_1000)   |
> -						 BIT(TRIGGER_NETDEV_RX)          |
> -						 BIT(TRIGGER_NETDEV_TX));
> +static const unsigned long supported_triggers =
> +	(BIT(TRIGGER_NETDEV_FULL_DUPLEX) |
> +	 BIT(TRIGGER_NETDEV_HALF_DUPLEX) |
> +	 BIT(TRIGGER_NETDEV_LINK)        |
> +	 BIT(TRIGGER_NETDEV_LINK_10)     |
> +	 BIT(TRIGGER_NETDEV_LINK_100)    |
> +	 BIT(TRIGGER_NETDEV_LINK_1000)   |
> +	 BIT(TRIGGER_NETDEV_RX)          |
> +	 BIT(TRIGGER_NETDEV_TX));

The outer parens are unnecessary, and thus could be removed.

Thanks.

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