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ARM: 9094/1: Register with kernel restart handler

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By making use of the kernel restart handler, board specific restart
handlers can be prioritized amongst available mechanisms for a particular
board or system.

Select the default priority of 128 to indicate that the restart callback
in the machine description is the default restart mechanism.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Guenter Roeck 2021-06-04 15:07:35 +01:00 committed by Russell King (Oracle)
parent 2bb565bbdc
commit ce8f1ccbc0
1 changed files with 18 additions and 2 deletions
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20
arch/arm/kernel/setup.c
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@ -1081,6 +1081,20 @@ void __init hyp_mode_check(void)
#endif
}
static void (*__arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
static int arm_restart(struct notifier_block *nb, unsigned long action,
void *data)
{
__arm_pm_restart(action, data);
return NOTIFY_DONE;
}
static struct notifier_block arm_restart_nb = {
.notifier_call = arm_restart,
.priority = 128,
};
void __init setup_arch(char **cmdline_p)
{
const struct machine_desc *mdesc = NULL;
@ -1149,8 +1163,10 @@ void __init setup_arch(char **cmdline_p)
kasan_init();
request_standard_resources(mdesc);
if (mdesc->restart)
arm_pm_restart = mdesc->restart;
if (mdesc->restart) {
__arm_pm_restart = mdesc->restart;
register_restart_handler(&arm_restart_nb);
}
unflatten_device_tree();