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watchdog: xen_wdt: fix potential build failure

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xen_wdt uses watchdog core functions (from watchdog_core.c) and, when
compiled without CONFIG_WATCHDOG_CORE being set, it produces the
following build error:

ERROR: "devm_watchdog_register_device" [drivers/watchdog/xen_wdt.ko] undefined!
ERROR: "watchdog_init_timeout" [drivers/watchdog/xen_wdt.ko] undefined!

Fix this by selecting CONFIG_WATCHDOG_CORE when CONFIG_XEN_WDT is set.

Fixes: 18cffd68e0c4 ("watchdog: xen_wdt: use the watchdog subsystem")
Signed-off-by: Radu Rendec <radu.rendec@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Radu Rendec 2018-02-19 14:38:51 +00:00 committed by Wim Van Sebroeck
parent 7e2e5158e7
commit 4cd6764495
1 changed files with 1 additions and 0 deletions
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drivers/watchdog/Kconfig
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@ -1839,6 +1839,7 @@ config WATCHDOG_SUN4V
config XEN_WDT
tristate "Xen Watchdog support"
depends on XEN
select WATCHDOG_CORE
help
Say Y here to support the hypervisor watchdog capability provided
by Xen 4.0 and newer. The watchdog timeout period is normally one