linux-kernel - Re: [PATCH 2/3] net: dsa: mt7530: use core

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Message-ID: <YEpUxS055rIVJ6VH@lunn.ch>
Date:   Thu, 11 Mar 2021 18:35:01 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>
Cc:     Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] net: dsa: mt7530: use core_write wrapper

On Wed, Mar 10, 2021 at 01:14:19PM -0800, Ilya Lipnitskiy wrote:
> When disabling PLL, there is no need to call core_write_mmd_indirect
> directly, use the core_write wrapper instead like the rest of the code
> in the function does. This change helps with consistency and
> readability.
> 
> Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>
> ---
>  drivers/net/dsa/mt7530.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
> index e785f80f966b..b106ea816778 100644
> --- a/drivers/net/dsa/mt7530.c
> +++ b/drivers/net/dsa/mt7530.c
> @@ -445,10 +445,7 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
>  		 * provide our own core_write_mmd_indirect to complete this
>  		 * function.
>  		 */
> -		core_write_mmd_indirect(priv,
> -					CORE_GSWPLL_GRP1,
> -					MDIO_MMD_VEND2,
> -					0);
> +		core_write(priv, CORE_GSWPLL_GRP1, 0);

		/* Disable PLL, since phy_device has not yet been created
		 * provided for phy_[read,write]_mmd_indirect is called, we
		 * provide our own core_write_mmd_indirect to complete this
		 * function.
		 */
		core_write_mmd_indirect(priv,
					CORE_GSWPLL_GRP1,
					MDIO_MMD_VEND2,
					0);

What about the comment? Seems odd to reference
core_write_mmd_indirect() when it is not actually called here after
your change.

     Andrew