watchdog: iTCO: Fix dependencies on I2C

If I2C is built as module, the iTCO watchdog driver must be built as module
as well. I2C_I801 must only be selected if I2C is configured.

This fixes the following build errors, seen if I2C=m and ITCO_WDT=y.

i2c-i801.c:(.text+0x2bf055): undefined reference to `i2c_del_adapter'
i2c-i801.c:(.text+0x2c13e0): undefined reference to `i2c_add_adapter'
i2c-i801.c:(.text+0x2c17bd): undefined reference to `i2c_new_device'

Fixes: 2a7a0e9bf7b3 ("watchdog: iTCO_wdt: Add support for TCO on Intel Sunrisepoint")
Reviewed-by: Matt Fleming <matt.fleming@intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index c68edc1..79e1aa1 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -817,8 +817,9 @@ config ITCO_WDT
        tristate "Intel TCO Timer/Watchdog"
        depends on (X86 || IA64) && PCI
        select WATCHDOG_CORE
+       depends on I2C || I2C=n
        select LPC_ICH if !EXPERT
-       select I2C_I801 if !EXPERT
+       select I2C_I801 if !EXPERT && I2C
        ---help---
          Hardware driver for the intel TCO timer based watchdog devices.
          These drivers are included in the Intel 82801 I/O Controller