Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5e53c8ed authored by Jean-Baptiste Theou's avatar Jean-Baptiste Theou Committed by Wim Van Sebroeck
Browse files

watchdog: gpio_wdt: Add option for early registration 



In some situation, mainly when it's not possible to disable a
watchdog, you may want the watchdog driver to be started as soon
as possible.

Adding GPIO_WATCHDOG_ARCH_INITCALL to raise initcall from
module_init to arch_initcall.

This patch require watchdog registration deferral mechanism

Signed-off-by: default avatarJean-Baptiste Theou <jtheou@adeneo-embedded.us>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent ef90174f

drivers/watchdog/Kconfig

+12 −0
Original line number Diff line number Diff line 


#

# Watchdog device configuration

#
@@ -113,6 +114,17 @@ config GPIO_WATCHDOG 
	  If you say yes here you get support for watchdog device

	  controlled through GPIO-line.



config GPIO_WATCHDOG_ARCH_INITCALL

	bool "Register the watchdog as early as possible"

	depends on GPIO_WATCHDOG=y

	help

	  In some situations, the default initcall level (module_init)

	  in not early enough in the boot process to avoid the watchdog

	  to be triggered.

	  If you say yes here, the initcall level would be raised to

	  arch_initcall.

	  If in doubt, say N.



config MENF21BMC_WATCHDOG

	tristate "MEN 14F021P00 BMC Watchdog"

	depends on MFD_MENF21BMC

drivers/watchdog/gpio_wdt.c

+9 −0
Original line number Diff line number Diff line
@@ -267,7 +267,16 @@ static struct platform_driver gpio_wdt_driver = { 
	.probe	= gpio_wdt_probe,

	.remove	= gpio_wdt_remove,

};



#ifdef CONFIG_GPIO_WATCHDOG_ARCH_INITCALL

static int __init gpio_wdt_init(void)

{

	return platform_driver_register(&gpio_wdt_driver);

}

arch_initcall(gpio_wdt_init);

#else

module_platform_driver(gpio_wdt_driver);

#endif



MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");

MODULE_DESCRIPTION("GPIO Watchdog");