| Message ID | d56ee0a8fce63beb3916caff3ebc38f8fc562c52.1683756691.git.daniel@makrotopia.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Improvements for RealTek 2.5G Ethernet PHYs | expand |
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index acadb6f0057b..e6a46c4d97b1 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -744,9 +744,11 @@ static bool rtlgen_supports_2_5gbps(struct phy_device *phydev) { int val; - phy_write(phydev, RTL821x_PAGE_SELECT, 0xa61); - val = phy_read(phydev, 0x13); - phy_write(phydev, RTL821x_PAGE_SELECT, 0); + phy_lock_mdio_bus(phydev); + rtl821x_write_page(phydev, 0xa61); + val = __phy_read(phydev, 0x13); + rtl821x_write_page(phydev, 0); + phy_unlock_mdio_bus(phydev); return val >= 0 && val & RTL_SUPPORTS_2500FULL; }
As we cannot rely on phy_read_paged function before the PHY is identified, the paged read in rtlgen_supports_2_5gbps needs to be open coded as it is being called by the match_phy_device function, ie. before .read_page and .write_page have been populated. Make sure it is also protected by the MDIO bus mutex and use rtl821x_write_page instead of 3 individually locked MDIO bus operations. Signed-off-by: Daniel Golle <daniel@makrotopia.org> --- drivers/net/phy/realtek.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)