netdev - [PATCH net v2 2/2] igc: Remove temporary workaround

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240214180347.3219650-3-anthony.l.nguyen@intel.com>
Date: Wed, 14 Feb 2024 10:03:45 -0800
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: Sasha Neftin <sasha.neftin@...el.com>,
	anthony.l.nguyen@...el.com,
	Paul Menzel <pmenzel@...gen.mpg.de>,
	Naama Meir <naamax.meir@...ux.intel.com>
Subject: [PATCH net v2 2/2] igc: Remove temporary workaround

From: Sasha Neftin <sasha.neftin@...el.com>

PHY_CONTROL register works as defined in the IEEE 802.3 specification
(IEEE 802.3-2008 22.2.4.1). Tidy up the temporary workaround.

User impact: PHY can now be powered down when the ethernet link is down.

Testing hints: ip link set down <device> (or just disconnect the
ethernet cable).

Oldest tested NVM version is: 1045:740.

Fixes: 5586838fe9ce ("igc: Add code for PHY support")
Signed-off-by: Sasha Neftin <sasha.neftin@...el.com>
Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>
Tested-by: Naama Meir <naamax.meir@...ux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/igc/igc_phy.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/igc/igc_phy.c b/drivers/net/ethernet/intel/igc/igc_phy.c
index 7cd8716d2ffa..861f37076861 100644
--- a/drivers/net/ethernet/intel/igc/igc_phy.c
+++ b/drivers/net/ethernet/intel/igc/igc_phy.c
@@ -130,11 +130,7 @@ void igc_power_down_phy_copper(struct igc_hw *hw)
 	/* The PHY will retain its settings across a power down/up cycle */
 	hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg);
 	mii_reg |= MII_CR_POWER_DOWN;
-
-	/* Temporary workaround - should be removed when PHY will implement
-	 * IEEE registers as properly
-	 */
-	/* hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);*/
+	hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);
 	usleep_range(1000, 2000);
 }
 
-- 
2.41.0