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| author | Linus Walleij <linus.walleij@linaro.org> | 2016-11-14 17:34:17 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2016-11-14 20:23:30 +0300 |
| commit | 93d710a65ef02fb7fd48ae207e78f460bd7a6089 (patch) | |
| tree | ad8822ecd5dc2fe64af69fa68d3230ca6c1fcda9 /drivers/i2c/Kconfig | |
| parent | f10a59eb8c1087f0ce03cf0392cd483922187066 (diff) | |
| download | linux-93d710a65ef02fb7fd48ae207e78f460bd7a6089.tar.xz | |
i2c: mux: fix up dependencies
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.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Reported-by: Jonathan Cameron <jic23@jic23.retrosnub.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
Diffstat (limited to 'drivers/i2c/Kconfig')
| -rw-r--r-- | drivers/i2c/Kconfig | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index d223650a97e4..11edabf425ae 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -59,7 +59,6 @@ config I2C_CHARDEV config I2C_MUX tristate "I2C bus multiplexing support" - depends on HAS_IOMEM help Say Y here if you want the I2C core to support the ability to handle multiplexed I2C bus topologies, by presenting each |