netdev - Re: [PATCH] net: sfp: add quirk for Finisar FTLF8536P4BCL

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Message-ID: <YW2I5qP0O4Pviia3@shell.armlinux.org.uk>
Date:   Mon, 18 Oct 2021 15:47:02 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Paul Menzel <pmenzel@...gen.mpg.de>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Taras Chornyi <taras.chornyi@...ision.eu>,
        Vadym Kochan <vadym.kochan@...ision.eu>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: sfp: add quirk for Finisar FTLF8536P4BCL

On Wed, Oct 13, 2021 at 12:45:42PM +0200, Paul Menzel wrote:
> From: Taras Chornyi <taras.chornyi@...ision.eu>
> 
> Finisar FTLF8536P4BCL can operate at 1000base-X and 10000base-SR, but
> reports 25G & 100GBd SR in it's EEPROM.
> 
> Signed-off-by: Vadym Kochan <vadym.kochan@...ision.eu>
> Signed-off-by: Taras Chornyi <taras.chornyi@...ision.eu>
> 
> [Upstream from https://github.com/dentproject/dentOS/pull/133/commits/b87b10ef72ea4638e80588facf3c9c2c1be67b40]
> 
> Signed-off-by: Paul Menzel <pmenzel@...gen.mpg.de>

Thanks Vadym for the eeprom dump.

> diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
> index 7362f8c3271c..162b4030a863 100644
> --- a/drivers/net/phy/sfp-bus.c
> +++ b/drivers/net/phy/sfp-bus.c
> @@ -55,6 +55,13 @@ static void sfp_quirk_ubnt_uf_instant(const struct sfp_eeprom_id *id,
>  	phylink_set(modes, 1000baseX_Full);
>  }
>  
> +static void sfp_quirk_finisar_25g(const struct sfp_eeprom_id *id,
> +				  unsigned long *modes)
> +{
> +	phylink_set(modes, 1000baseX_Full);
> +	phylink_set(modes, 10000baseSR_Full);
> +}

I'd ask that this is named "sfp_quirk_1g10g()" please - it isn't
doing anything that is specific to Finisar, it is merely stating
that 1000base-X and 10000base-SR are supported.

> +	}, {
> +		// Finisar FTLF8536P4BCL can operate at 1000base-X and 10000base-SR,
> +		// but reports 25G & 100GBd SR in it's EEPROM

This file doesn't wrap over column 80, so please continue to keeping
it that way.

		// Finisar FTLF8536P4BCL can operate at 1000base-X and
		// 10000base-SR, but reports 25G & 100GBd SR in it's EEPROM

Thanks.

-- 
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