The recently added X805 rtc driver uses the i2c subsystem,
but has no Kconfig dependency, so it can result in a build
error when i2c is disabled:
drivers/rtc/rtc-abx805.c: In function 'abx805_read_multiple_regs':
drivers/rtc/rtc-abx805.c:55:2: error: implicit declaration of function
'i2c_transfer' [-Werror=implicit-function-declaration]
This adds the obvious dependency.
Signed-off-by: Arnd Bergmann <a...@arndb.de>
Fixes: 9033ab8ddd29 ("rtc: add rtc-abx805, a driver for the Abracon AB 1805 i2c
rtc")
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 61ea2e3b4071..80ae27ffe8ea 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1083,6 +1083,7 @@ config RTC_DRV_AB8500
config RTC_DRV_ABX805
tristate "Abracon AB X805 RTC"
+ depends on I2C
help
Select this to enable support for the Abracon AB X805 RTC.
AB X805 is the i2c flavour of the AB 18X5 family of ultra-low-power
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