Hi

On commit 3d5d2279c0c5d3a7e83f94d98434c1cf29e35311.

root@debian:/software/barebox# make ARCH=arm CROSS_COMPILE=/armbin/arm-linux-
make[1]: `arch/arm/include/asm/mach-types.h' is up to date.
CHK     include/linux/version.h
CHK     include/linux/utsrelease.h
SYMLINK include/config.h -> arch/arm/boards/at91sam9263ek//config.h
CC      drivers/i2c/i2c.o
drivers/i2c/i2c.c:375: error: 'i2c_register_master' undeclared here (not in a function)
drivers/i2c/i2c.c:375: warning: type defaults to 'int' in declaration of 'i2c_register_master'
make[2]: *** [drivers/i2c/i2c.o] Error 1
make[1]: *** [drivers/i2c] Error 2
make: *** [drivers] Error 2

# grep I2C .config
# CONFIG_CMD_I2C is not set
CONFIG_I2C=y
CONFIG_DRIVER_I2C_MC13892=y
CONFIG_DRIVER_I2C_MC34704=y
CONFIG_DRIVER_I2C_MC9SDZ60=y
CONFIG_DRIVER_I2C_LP3972=y
# CONFIG_DRIVER_I2C_TWL4030 is not set

regards

Nataraj