linux-kernel - [PATCH net v2 0/2] Fix 'ethtool --show-eee' during initial stage

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Message-Id: <20241115111151.183108-1-yong.liang.choong@linux.intel.com>
Date: Fri, 15 Nov 2024 19:11:49 +0800
From: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Oleksij Rempel <o.rempel@...gutronix.de>
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH net v2 0/2] Fix 'ethtool --show-eee' during initial stage

From: Choong Yong Liang <yong.liang.choong@...el.com>

When the MAC boots up with a Marvell PHY and phy_support_eee() is implemented,
the 'ethtool --show-eee' command shows that EEE is enabled, but in actuality,
the driver side is disabled. If we try to enable EEE through
'ethtool --set-eee' for a Marvell PHY, nothing happens because the eee_cfg
matches the setting required to enable EEE in ethnl_set_eee().

This patch series will remove phydev->eee_enabled and replace it with
eee_cfg.eee_enabled. When performing genphy_c45_an_config_eee_aneg(), it
will follow the master configuration to have software and hardware in sync,
allowing 'ethtool --show-eee' to display the correct value during the
initial stage.

v2 changes:
 - Implement the prototype suggested by Russell
 - Check EEE before calling phy_support_eee()

Thanks to Russell for the proposed prototype in [1].

Reference:
[1] https://patchwork.kernel.org/comment/26121323/

Choong Yong Liang (2):
  net: phy: replace phydev->eee_enabled with eee_cfg.eee_enabled
  net: stmmac: set initial EEE policy configuration

 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |  3 +++
 drivers/net/phy/phy-c45.c                         | 11 +++++------
 drivers/net/phy/phy_device.c                      |  6 +++---
 include/linux/phy.h                               |  5 ++---
 4 files changed, 13 insertions(+), 12 deletions(-)

-- 
2.34.1