1eab9b8a9b
bfc17c1658353 net: phy: realtek: disable PHY-mode EEE fabcfd6d10999 net: phy: realtek: add defines for shadowed c45 standard registers 8af2136e77989 net: phy: realtek: add helper RTL822X_VND2_C22_REG 02d3b306ac2f0 net: phy: realtek: switch from paged to MMD ops in rtl822x functions da681ed73fb98 net: phy: realtek: improve mmd register access for internal PHY's 0bea93fdbaf86 net: phy: realtek: use string choices helpers 51773846fab24 net: phy: realtek: make HWMON support a user-visible Kconfig symbol Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> (cherry picked from commit 7673a165a955269773eb604d3678d86d0bb7f49c)
36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From 4dd2cc9b91ecb25f278a2c55e07e6455e9000e6b Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Sat, 22 Apr 2023 01:21:14 +0100
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Subject: [PATCH] net: phy: realtek: make sure paged read is protected by mutex
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As we cannot rely on phy_read_paged function before the PHY is
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identified, the paged read in rtlgen_supports_2_5gbps needs to be open
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coded as it is being called by the match_phy_device function, ie. before
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.read_page and .write_page have been populated.
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Make sure it is also protected by the MDIO bus mutex and use
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rtl821x_write_page instead of 3 individually locked MDIO bus operations.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/net/phy/realtek/realtek_main.c | 8 +++++---
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1 file changed, 5 insertions(+), 3 deletions(-)
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--- a/drivers/net/phy/realtek/realtek_main.c
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+++ b/drivers/net/phy/realtek/realtek_main.c
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@@ -1115,9 +1115,11 @@ static bool rtlgen_supports_2_5gbps(stru
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{
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int val;
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- phy_write(phydev, RTL821x_PAGE_SELECT, 0xa61);
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- val = phy_read(phydev, 0x13);
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- phy_write(phydev, RTL821x_PAGE_SELECT, 0);
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+ mutex_lock(&phydev->mdio.bus->mdio_lock);
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+ rtl821x_write_page(phydev, 0xa61);
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+ val = __phy_read(phydev, 0x13);
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+ rtl821x_write_page(phydev, 0);
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+ mutex_unlock(&phydev->mdio.bus->mdio_lock);
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return val >= 0 && val & MDIO_PMA_SPEED_2_5G;
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}
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