From 42205047674d7fc9e0aa747273fbc7dcfbac3183 Mon Sep 17 00:00:00 2001 From: Bhupesh Sharma Date: Sun, 1 Sep 2013 04:40:52 +0530 Subject: [PATCH] net/phy: realtek: Fix the PHY ID mask to ensure the correct Realtek PHY is detected The 'get_phy_driver' code in 'drivers/net/phy/phy.c' uses the following method to determine which driver is to be loaded for a particular PHY module: list_for_each(entry, &phy_drivers) { drv = list_entry(entry, struct phy_driver, list); if ((drv->uid & drv->mask) == (phy_id & drv->mask)) return drv; } This means that a drv->mask of 0xfffff0 will return incorrect phy driver for the logic above, even if the drv->uid is anything other than something ending with a 0x0. For e.g. if the RTL8211E drv->uid is 0x1cc915 and drv->mask is 0xffffff and the RTL8211B drv->uid is 0x1cc910 and drv->mask is 0xffffff0, then the phy driver selected will always be RTL8211B even though the underlying phy connected on the board is a 8211E module. This patch fixes this issue. Signed-off-by: Bhupesh Sharma --- drivers/net/phy/realtek.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index ddbbc35e27..a3ace68526 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -102,7 +102,7 @@ static int rtl8211x_startup(struct phy_device *phydev) static struct phy_driver RTL8211B_driver = { .name = "RealTek RTL8211B", .uid = 0x1cc910, - .mask = 0xfffff0, + .mask = 0xffffff, .features = PHY_GBIT_FEATURES, .config = &rtl8211x_config, .startup = &rtl8211x_startup, @@ -113,7 +113,7 @@ static struct phy_driver RTL8211B_driver = { static struct phy_driver RTL8211E_driver = { .name = "RealTek RTL8211E", .uid = 0x1cc915, - .mask = 0xfffff0, + .mask = 0xffffff, .features = PHY_GBIT_FEATURES, .config = &rtl8211x_config, .startup = &rtl8211x_startup, @@ -124,7 +124,7 @@ static struct phy_driver RTL8211E_driver = { static struct phy_driver RTL8211DN_driver = { .name = "RealTek RTL8211DN", .uid = 0x1cc914, - .mask = 0xfffff0, + .mask = 0xffffff, .features = PHY_GBIT_FEATURES, .config = &rtl8211x_config, .startup = &rtl8211x_startup, -- 2.25.1