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Date: Mon, 18 Sep 2017 15:19:05 +0930 From: Andrew Jeffery <andrew@...id.au> To: linux-watchdog@...r.kernel.org Cc: Andrew Jeffery <andrew@...id.au>, wim@...ana.be, linux@...ck-us.net, joel@....id.au, linux-kernel@...r.kernel.org, openbmc@...ts.ozlabs.org, linux-aspeed@...ts.ozlabs.org, ryan_chen@...eedtech.com Subject: [PATCH 4/4] watchdog: aspeed: Move init to arch_initcall Probing at device_initcall time lead to perverse cases where the watchdog was probed after, say, I2C, which then leaves a potentially running watchdog at the mercy of I2C device behaviour and bus conditions. Load the watchdog driver early to ensure that the kernel is patting it well before initialising peripherals. Signed-off-by: Andrew Jeffery <andrew@...id.au> --- drivers/watchdog/Kconfig | 6 ++---- drivers/watchdog/aspeed_wdt.c | 7 ++++++- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index a1b92ebe74b6..6103185983ed 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -741,8 +741,9 @@ config RENESAS_RZAWDT Renesas RZ/A SoCs. These watchdogs can be used to reset a system. config ASPEED_WATCHDOG - tristate "Aspeed BMC watchdog support" + bool "Aspeed BMC watchdog support" depends on ARCH_ASPEED || COMPILE_TEST + default y if ARCH_ASPEED select WATCHDOG_CORE help Say Y here to include support for the watchdog timer @@ -750,9 +751,6 @@ config ASPEED_WATCHDOG This driver is required to reboot the SoC. - To compile this driver as a module, choose M here: the - module will be called aspeed_wdt. - config ZX2967_WATCHDOG tristate "ZTE zx2967 SoCs watchdog support" depends on ARCH_ZX diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c index 99bc6fbd8852..679c35abadc4 100644 --- a/drivers/watchdog/aspeed_wdt.c +++ b/drivers/watchdog/aspeed_wdt.c @@ -313,7 +313,12 @@ static struct platform_driver aspeed_watchdog_driver = { .of_match_table = of_match_ptr(aspeed_wdt_of_table), }, }; -module_platform_driver(aspeed_watchdog_driver); + +static int __init aspeed_wdt_init(void) +{ + return platform_driver_register(&aspeed_watchdog_driver); +} +arch_initcall(aspeed_wdt_init); MODULE_DESCRIPTION("Aspeed Watchdog Driver"); MODULE_LICENSE("GPL"); -- 2.11.0
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