On 28/01/15 13:58, Arnd Bergmann wrote:
> ak8975 depends on I2C and GPIOLIB, so any symbols that selects
> ak8975 must have the same dependency, or we get build errors:
>
> drivers/iio/magnetometer/ak8975.c: In function 'ak8975_who_i_am':
> drivers/iio/magnetometer/ak8975.c:393:2: error: implicit declaration of function 'i2c_smbus_read_i2c_block_data' [-Werror=implicit-function-declaration]
> ret = i2c_smbus_read_i2c_block_data(client, AK09912_REG_WIA1,
> ^
> drivers/iio/magnetometer/ak8975.c: In function 'ak8975_set_mode':
> drivers/iio/magnetometer/ak8975.c:431:2: error: implicit declaration of function 'i2c_smbus_write_byte_data' [-Werror=implicit-function-declaration]
> ret = i2c_smbus_write_byte_data(data->client,
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> Fixes: 57e73a423b1e85 ("iio: ak8975: add ak09911 and ak09912 support")
Now applied and pull request sent.
> ---
> I found this recent regression doing ARM randconfig builds, please apply
>
> diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig
> index 4c7a4c52dd06..a5d6de72c523 100644
> --- a/drivers/iio/magnetometer/Kconfig
> +++ b/drivers/iio/magnetometer/Kconfig
> @@ -18,6 +18,8 @@ config AK8975
>
> config AK09911
> tristate "Asahi Kasei AK09911 3-axis Compass"
> + depends on I2C
> + depends on GPIOLIB
> select AK8975
> help
> Deprecated: AK09911 is now supported by AK8975 driver.
>
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