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[net-next,v5,3/5] net: phylink: allow attaching phy for SFP modules on 802.3z mode

Message ID 20210114044331.5073-4-kabel@kernel.org (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series Support for RollBall 10G copper SFP modules | expand


Context Check Description
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netdev/tree_selection success Clearly marked for net-next
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netdev/cc_maintainers warning 2 maintainers not CCed: linux@armlinux.org.uk hkallweit1@gmail.com
netdev/source_inline success Was 0 now: 0
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netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 17 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
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netdev/stable success Stable not CCed

Commit Message

Marek Behún Jan. 14, 2021, 4:43 a.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

Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Pali Rohár <pali@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>
 drivers/net/phy/phylink.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
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diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 84f6e197f965..f97d041f82f4 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)
@@ -2069,9 +2069,6 @@  static int phylink_sfp_config(struct phylink *pl, u8 mode,
 		    phylink_an_mode_str(mode), phy_modes(config.interface),
 		    __ETHTOOL_LINK_MODE_MASK_NBITS, support);
-	if (phy_interface_mode_is_8023z(iface) && pl->phydev)
-		return -EINVAL;
 	changed = !linkmode_equal(pl->supported, support);
 	if (changed) {
 		linkmode_copy(pl->supported, support);