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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: 18cffd68e0 ("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 config XEN_WDT
tristate "Xen Watchdog support" tristate "Xen Watchdog support"
depends on XEN depends on XEN
select WATCHDOG_CORE
help help
Say Y here to support the hypervisor watchdog capability provided Say Y here to support the hypervisor watchdog capability provided
by Xen 4.0 and newer. The watchdog timeout period is normally one by Xen 4.0 and newer. The watchdog timeout period is normally one