Many drivers implements the exact same piece of code to register a reboot notifier. It can be nice to factorize this in the watchdog core. The first patch adds a new helper function, watchdog_stop_on_reboot, which registers a reboot notifier block for this device. If used, the watchdog core will care about stopping the watchdog when receiving a reboot notification. The following patches bring this change to the current watchdog drivers that use watchdog_core. This action is done only when the reboot code is SYS_HALT or SYS_DOWN, since that is what most of the drivers are doing. Only 3 drivers, including gpio_wdt, do not stop the watchdog on SYS_DOWN. So for this watchdog, it will now stop on reboot if "always-running" is not set, whereas it did not prior to this patchset. This change has been compile-tested with allyesconfig on arm. It has been tested with (not mainlined yet) ts-4800's watchdog driver. Changes in v2: - call ops->stop only if watchdog is active - squashed gpio_wdt-related commits to keep a consistent behaviour. Damien Riegel (6): watchdog: core: add reboot notifier support watchdog: bcm47xx_wdt: use core reboot notifier watchdog: cadence_wdt: use core reboot notifier watchdog: gpio_wdt: use core reboot notifier watchdog: softdog: use core reboot notifier watchdog: w83627hf_wdt: use core reboot notifier Documentation/watchdog/watchdog-kernel-api.txt | 8 ++++++ drivers/watchdog/bcm47xx_wdt.c | 24 ++--------------- drivers/watchdog/cadence_wdt.c | 36 +------------------------ drivers/watchdog/gpio_wdt.c | 35 ++---------------------- drivers/watchdog/softdog.c | 30 ++------------------- drivers/watchdog/w83627hf_wdt.c | 32 ++-------------------- drivers/watchdog/watchdog_core.c | 37 ++++++++++++++++++++++++++ include/linux/bcm47xx_wdt.h | 2 -- include/linux/watchdog.h | 9 +++++++ 9 files changed, 63 insertions(+), 150 deletions(-) -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
