On Tue, Feb 28, 2017 at 10:01:20PM +0100, Arnd Bergmann wrote:
> This driver fails to link when CONFIG_I2C is disabled or a loadable module while
> the watchdog is built-in:
>
> drivers/watchdog/built-in.o: In function `menf21bmc_wdt_shutdown':
> menf21bmc_wdt.c:(.text+0x9b44): undefined reference to `i2c_smbus_write_word_data'
> menf21bmc_wdt.c:(.text+0x9b44): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `i2c_smbus_write_word_data'
>
> This adds a Kconfig dependency for it, to enforce a valid configuration.
>
> Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/watchdog/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index de52495ef150..ab0ec389e436 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -142,6 +142,7 @@ config GPIO_WATCHDOG_ARCH_INITCALL
> config MENF21BMC_WATCHDOG
> tristate "MEN 14F021P00 BMC Watchdog"
> depends on MFD_MENF21BMC || COMPILE_TEST
> + depends on I2C
> select WATCHDOG_CORE
> help
> Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
> --
> 2.9.0
>
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