linux-kernel - [PATCH 5.16 125/227] net: phy: mediatek: remove PHY mode check on MT7531

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Message-Id: <20220221084939.004206929@linuxfoundation.org>
Date:   Mon, 21 Feb 2022 09:49:04 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hauke Mehrtens <hauke@...ke-m.de>,
        DENG Qingfang <dqfext@...il.com>,
        Arınç ÜNAL <arinc.unal@...nc9.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.16 125/227] net: phy: mediatek: remove PHY mode check on MT7531

From: DENG Qingfang <dqfext@...il.com>

commit 525b108e6d95b643eccbd84fb10aa9aa101b18dd upstream.

The function mt7531_phy_mode_supported in the DSA driver set supported
mode to PHY_INTERFACE_MODE_GMII instead of PHY_INTERFACE_MODE_INTERNAL
for the internal PHY, so this check breaks the PHY initialization:

mt7530 mdio-bus:00 wan (uninitialized): failed to connect to PHY: -EINVAL

Remove the check to make it work again.

Reported-by: Hauke Mehrtens <hauke@...ke-m.de>
Fixes: e40d2cca0189 ("net: phy: add MediaTek Gigabit Ethernet PHY driver")
Signed-off-by: DENG Qingfang <dqfext@...il.com>
Acked-by: Arınç ÜNAL <arinc.unal@...nc9.com>
Tested-by: Hauke Mehrtens <hauke@...ke-m.de>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/phy/mediatek-ge.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/net/phy/mediatek-ge.c
+++ b/drivers/net/phy/mediatek-ge.c
@@ -55,9 +55,6 @@ static int mt7530_phy_config_init(struct
 
 static int mt7531_phy_config_init(struct phy_device *phydev)
 {
-	if (phydev->interface != PHY_INTERFACE_MODE_INTERNAL)
-		return -EINVAL;
-
 	mtk_gephy_config_init(phydev);
 
 	/* PHY link down power saving enable */