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[net-next,2/5] net: phylink: allow attaching phy for SFP modules on 802.3z mode

Message ID 20201028221427.22968-3-kabel@kernel.org
State New
Headers show
Series Support for RollBall 10G copper SFP modules | expand

Commit Message

Marek Behún Oct. 28, 2020, 10:14 p.m. UTC
Some SFPs may contain an internal PHY which may in some cases want to
connect with the host interface in 1000base-x/2500base-x mode.
Do not fail if such PHY is being attached in one of these PHY interface
modes.

Signed-off-by: Marek Behún <kabel@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/phylink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Russell King (Oracle) Oct. 29, 2020, 12:08 p.m. UTC | #1
On Wed, Oct 28, 2020 at 11:14:24PM +0100, Marek Behún wrote:
> Some SFPs may contain an internal PHY which may in some cases want to

> connect with the host interface in 1000base-x/2500base-x mode.

> Do not fail if such PHY is being attached in one of these PHY interface

> modes.

> 

> Signed-off-by: Marek Behún <kabel@kernel.org>

> Cc: Andrew Lunn <andrew@lunn.ch>

> Cc: Russell King <rmk+kernel@armlinux.org.uk>

> ---

>  drivers/net/phy/phylink.c | 2 +-

>  1 file changed, 1 insertion(+), 1 deletion(-)

> 

> diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c

> index 5d8c015bc9f2..52954f12ca5e 100644

> --- a/drivers/net/phy/phylink.c

> +++ b/drivers/net/phy/phylink.c

> @@ -1018,7 +1018,7 @@ static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy,

>  {

>  	if (WARN_ON(pl->cfg_link_an_mode == MLO_AN_FIXED ||

>  		    (pl->cfg_link_an_mode == MLO_AN_INBAND &&

> -		     phy_interface_mode_is_8023z(interface))))

> +		     phy_interface_mode_is_8023z(interface) && !pl->sfp_bus)))

>  		return -EINVAL;

>  

>  	if (pl->phydev)


I think also changing phylink_sfp_config() too since that check is no
longer relevent - although it doesn't actually end up being effective
today. So, might as well be removed along with the above change.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
diff mbox series

Patch

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 5d8c015bc9f2..52954f12ca5e 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1018,7 +1018,7 @@  static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy,
 {
 	if (WARN_ON(pl->cfg_link_an_mode == MLO_AN_FIXED ||
 		    (pl->cfg_link_an_mode == MLO_AN_INBAND &&
-		     phy_interface_mode_is_8023z(interface))))
+		     phy_interface_mode_is_8023z(interface) && !pl->sfp_bus)))
 		return -EINVAL;
 
 	if (pl->phydev)