[PATCH v2 3/5] arm: Support reboot through watchdog subsystem
From: linux@roeck-us.net (Guenter Roeck)
Date: 2014-05-15 01:38:07
Also in:
linux-watchdog, lkml
On 05/09/2014 05:31 PM, Guenter Roeck wrote:
The watchdog subsystem provides an API to perform a system reboot. Use it. With this change, the arm_pm_restart callback is now optional, so check if it is set before calling it. Tested-by: Jonas Jensen <redacted> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Any comments / ack from the arm maintainers ? Thanks, Guenter
quoted hunk ↗ jump to hunk
--- v2: No change arch/arm/kernel/process.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 81ef686..c3b7b5e 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c@@ -32,6 +32,7 @@ #include <linux/hw_breakpoint.h> #include <linux/leds.h> #include <linux/reboot.h> +#include <linux/watchdog.h> #include <asm/cacheflush.h> #include <asm/idmap.h>@@ -230,7 +231,10 @@ void machine_restart(char *cmd) local_irq_disable(); smp_send_stop(); - arm_pm_restart(reboot_mode, cmd); + if (arm_pm_restart) + arm_pm_restart(reboot_mode, cmd); + + watchdog_do_reboot(reboot_mode, cmd); /* Give a grace period for failure to restart of 1s */ mdelay(1000);