On Mon, Nov 14, 2016 at 03:34:17PM +0100, Linus Walleij wrote: > We get the following build error from UM Linux after adding > an entry to drivers/iio/gyro/Kconfig that issues "select I2C_MUX": > > ERROR: "devm_ioremap_resource" > [drivers/i2c/muxes/i2c-mux-reg.ko] undefined! > ERROR: "of_address_to_resource" > [drivers/i2c/muxes/i2c-mux-reg.ko] undefined! > > It appears that the I2C mux core code depends on HAS_IOMEM > for historical reasons, while CONFIG_I2C_MUX_REG does *not* > have a direct dependency on HAS_IOMEM. > > This creates a situation where a allyesconfig or allmodconfig > for UM Linux will select I2C_MUX, and will implicitly enable > I2C_MUX_REG as well, and the compilation will fail for the > register driver. > > Fix this up by making I2C_MUX_REG depend on HAS_IOMEM and > removing the dependency from I2C_MUX. > > Cc: stable@xxxxxxxxxxxxxxx > Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx> > Reported-by: Jonathan Cameron <jic23@xxxxxxxxxxxxxxxxxxxxx> > Cc: Jonathan Cameron <jic23@xxxxxxxxxxxxxxxxxxxxx> > Cc: Peter Rosin <peda@xxxxxxxxxx> > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Applied to for-current, thanks!
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