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56 lines
2.1 KiB
Diff
56 lines
2.1 KiB
Diff
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From 11933aa76865621d8e82553c8f3bc07796a5aaa2 Mon Sep 17 00:00:00 2001
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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
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Date: Thu, 1 Jun 2023 10:12:06 +0100
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Subject: [PATCH 20/21] net: phylink: actually fix ksettings_set() ethtool call
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Raju Lakkaraju reported that the below commit caused a regression
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with Lan743x drivers and a 2.5G SFP. Sadly, this is because the commit
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was utterly wrong. Let's fix this properly by not moving the
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linkmode_and(), but instead copying the link ksettings and then
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modifying the advertising mask before passing the modified link
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ksettings to phylib.
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Fixes: df0acdc59b09 ("net: phylink: fix ksettings_set() ethtool call")
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Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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Link: https://lore.kernel.org/r/E1q4eLm-00Ayxk-GZ@rmk-PC.armlinux.org.uk
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/phy/phylink.c | 15 ++++++++++-----
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1 file changed, 10 insertions(+), 5 deletions(-)
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--- a/drivers/net/phy/phylink.c
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+++ b/drivers/net/phy/phylink.c
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@@ -2259,11 +2259,13 @@ int phylink_ethtool_ksettings_set(struct
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ASSERT_RTNL();
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- /* Mask out unsupported advertisements */
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- linkmode_and(config.advertising, kset->link_modes.advertising,
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- pl->supported);
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-
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if (pl->phydev) {
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+ struct ethtool_link_ksettings phy_kset = *kset;
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+
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+ linkmode_and(phy_kset.link_modes.advertising,
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+ phy_kset.link_modes.advertising,
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+ pl->supported);
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+
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/* We can rely on phylib for this update; we also do not need
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* to update the pl->link_config settings:
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* - the configuration returned via ksettings_get() will come
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@@ -2282,10 +2284,13 @@ int phylink_ethtool_ksettings_set(struct
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* the presence of a PHY, this should not be changed as that
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* should be determined from the media side advertisement.
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*/
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- return phy_ethtool_ksettings_set(pl->phydev, kset);
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+ return phy_ethtool_ksettings_set(pl->phydev, &phy_kset);
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}
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config = pl->link_config;
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+ /* Mask out unsupported advertisements */
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+ linkmode_and(config.advertising, kset->link_modes.advertising,
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+ pl->supported);
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/* FIXME: should we reject autoneg if phy/mac does not support it? */
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switch (kset->base.autoneg) {
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