There is a linking issue when using phy_register_fixup{,_for_uid,_for_id} and CONFIG_PHYLIB is not a builtin:
arch/arm/mach-at91/built-in.o: In function `ksz9021rn_phy_fixup': :(.text+0x1174): undefined reference to `mdiobus_write' :(.text+0x1188): undefined reference to `mdiobus_write' :(.text+0x119c): undefined reference to `mdiobus_write' :(.text+0x11b0): undefined reference to `mdiobus_write' arch/arm/mach-at91/built-in.o: In function `sama5_dt_device_init': :(.init.text+0x1e34): undefined reference to `phy_register_fixup_for_uid' This has been solved for arch/arm/mach-mxs/ and arch/arm/mach-imx/ by testing IS_BUILTIN(CONFIG_PHYLIB) before calling the functions. The first patch is an attempt at solving that issue globally. The following patches remove the unnecessary IS_BUILTIN(CONFIG_PHYLIB) checks. Quickly greping into the code shows that the issue may arise in: arch/powerpc/platforms/85xx/mpc85xx_mds.c arch/arm/mach-davinci/board-dm644x-evm.c arch/arm/mach-orion5x/dns323-setup.c arch/arm/mach-at91/board-dt-sama5.c Changes in v2: - indentation fixes - use static inline function instead of defines and return -ENOTSUPP Alexandre Belloni (3): net: phy: prevent linking breakage arm: mxs: don't check for CONFIG_PHYLIB as builtin arm: imx: don't check for CONFIG_PHYLIB as builtin arch/arm/mach-imx/mach-imx6q.c | 23 ++++++++++------------- arch/arm/mach-mxs/mach-mxs.c | 5 ++--- drivers/net/phy/phy_device.c | 6 ++++++ include/linux/phy.h | 26 ++++++++++++++++++++++++++ 4 files changed, 44 insertions(+), 16 deletions(-) -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/