linux-kernel - Re: [PATCH net-next v6 6/9] net: dpaa: Convert to phylink

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Date:   Tue, 4 Oct 2022 19:48:32 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Sean Anderson <sean.anderson@...o.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Madalin Bucur <madalin.bucur@....com>,
        Camelia Alexandra Groza <camelia.groza@....com>,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        "linuxppc-dev @ lists . ozlabs . org" <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH net-next v6 6/9] net: dpaa: Convert to phylink

On Fri, Sep 30, 2022 at 04:09:30PM -0400, Sean Anderson wrote:
> +static void memac_validate(struct phylink_config *config,
> +			   unsigned long *supported,
> +			   struct phylink_link_state *state)
> +{
> +	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
> +	struct fman_mac *memac = fman_config_to_mac(config)->fman_mac;
> +
> +	phylink_generic_validate(config, supported, state);
> +
> +	if (phy_interface_mode_is_rgmii(state->interface) &&
> +	    memac->rgmii_no_half_duplex) {
> +		phylink_caps_to_linkmodes(mask, MAC_10HD | MAC_100HD);
> +		linkmode_andnot(supported, supported, mask);
> +		linkmode_andnot(state->advertising, state->advertising, mask);
> +	}
> +}

Having been through the rest of this with a fine tooth comb, nothing
else stands out with the exception of the above, which I think could
be done better with this patch:

http://git.armlinux.org.uk/cgit/linux-arm.git/commit/?h=net-queue&id=e65a47c4053255bd51715d5550e21c869971258c

Since the above would become:

static void memac_validate(struct phylink_config *config,
			   unsigned long *supported,
			   struct phylink_link_state *state)
{
	struct mac_device *mac_dev = fman_config_to_mac(config);
	struct fman_mac *memac = mac_dev->fman_mac;
	unsigned long caps;

	caps = mac_dev->phylink_config.capabilities;

	if (phy_interface_mode_is_rgmii(state->interface) &&
	    memac->rgmii_no_half_duplex)
		caps &= ~(MAC_10HD | MAC_100HD);

	phylink_validate_mask_caps(supported, state, caps);
}

If you want to pick up my patch that adds this helper into your series,
please do.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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