watchdog: iTCO: fix link error
When the MFD driver is a loadable module, the watchdog driver fails
to get linked into the kernel:
drivers/watchdog/iTCO_wdt.o: In function `update_no_reboot_bit_pmc':
iTCO_wdt.c:(.text+0x54f): undefined reference to `intel_pmc_gcr_update'
The code is written to support operation without the MFD driver, so
add a Kconfig dependency that allows this, while disallowing the watchdog
to be built-in when the MFD driver is a module.
Fixes: 25f1ca31e230 ("platform/x86: intel_pmc_ipc: Convert to MFD")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20200428212959.2993304-1-arnd@arndb.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index a0399a5..b3ab5a4 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1218,6 +1218,7 @@
depends on (X86 || IA64) && PCI
select WATCHDOG_CORE
depends on I2C || I2C=n
+ depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
select LPC_ICH if !EXPERT
select I2C_I801 if !EXPERT && I2C
---help---
