linux-kernel - Re: [PATCH] net: phy: add driver for Motorcomm yt8511 phy

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Date:   Tue, 18 May 2021 11:59:27 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Peter Geis <pgwipeout@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH] net: phy: add driver for Motorcomm yt8511 phy

On Tue, May 11, 2021 at 05:46:06PM -0400, Peter Geis wrote:
> Add a driver for the Motorcomm yt8511 phy that will be used in the
> production Pine64 rk3566-quartz64 development board.
> It supports gigabit transfer speeds, rgmii, and 125mhz clk output.
> 
> Signed-off-by: Peter Geis <pgwipeout@...il.com>
> ---
>  MAINTAINERS                 |  6 +++
>  drivers/net/phy/Kconfig     |  6 +++
>  drivers/net/phy/Makefile    |  1 +
>  drivers/net/phy/motorcomm.c | 85 +++++++++++++++++++++++++++++++++++++
>  4 files changed, 98 insertions(+)
>  create mode 100644 drivers/net/phy/motorcomm.c

<...>

> +static const struct mdio_device_id __maybe_unused motorcomm_tbl[] = {
> +	{ PHY_ID_MATCH_EXACT(PHY_ID_YT8511) },
> +	{ /* sentinal */ }
> +}

Why is this "__maybe_unused"? This *.c file doesn't have any compilation option
to compile part of it.

The "__maybe_unused" is not needed in this case.

Thanks