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watchdog: iTCO: fix link error

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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: 25f1ca31e2 ("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>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Arnd Bergmann 2020-04-28 23:29:11 +02:00 committed by Andy Shevchenko
parent 65fce35f73
commit 438d8cafe4
1 changed files with 1 additions and 0 deletions
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drivers/watchdog/Kconfig
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@ -1217,6 +1217,7 @@ config ITCO_WDT
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---