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From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Antoine Tenart <antoine.tenart@bootlin.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com,
	maxime.chevallier@bootlin.com, gregory.clement@bootlin.com,
	miquel.raynal@bootlin.com, nadavh@marvell.com,
	stefanc@marvell.com, ymarkman@marvell.com, mw@semihalf.com,
	Baruch Siach <baruch@tkos.co.il>
Subject: Re: [PATCH net] net: mvpp2: 10G modes aren't supported on all ports
Date: Tue, 11 Dec 2018 16:36:36 +0000	[thread overview]
Message-ID: <20181211163635.GG30658@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20181211163228.26130-1-antoine.tenart@bootlin.com>

On Tue, Dec 11, 2018 at 05:32:28PM +0100, Antoine Tenart wrote:
> The mvpp2_phylink_validate() function sets all modes that are
> supported by a given PPv2 port. A recent change made all ports to
> advertise they support 10G modes in certain cases. This is not true,
> as only the port #0 can do so. This patch fixes it.
> 
> Fixes: 01b3fd5ac97c ("net: mvpp2: fix detection of 10G SFP modules")
> Cc: Baruch Siach <baruch@tkos.co.il>
> Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
> ---
>  drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 14 ++++++++------
>  1 file changed, 8 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> index 125ea99418df..88aa488054a8 100644
> --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> @@ -4405,12 +4405,14 @@ static void mvpp2_phylink_validate(struct net_device *dev,
>  	case PHY_INTERFACE_MODE_10GKR:
>  	case PHY_INTERFACE_MODE_XAUI:

Are these modes supported on anything except port 0?  If not, you
should be rejecting these, rather than just treating them as RGMII.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up

  reply	other threads:[~2018-12-11 16:37 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-11 16:32 [PATCH net] net: mvpp2: 10G modes aren't supported on all ports Antoine Tenart
2018-12-11 16:36 ` Russell King - ARM Linux [this message]
2018-12-11 17:53   ` Baruch Siach
2018-12-11 18:51     ` Russell King - ARM Linux
2018-12-12  9:30       ` Antoine Tenart
2018-12-12 14:14         ` Antoine Tenart
2018-12-12 14:36           ` Baruch Siach
2018-12-11 21:11   ` Stefan Chulski
2018-12-12  9:32     ` Antoine Tenart
2018-12-18 22:49 ` David Miller

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