From: Guenter Roeck <[email protected]> Register with kernel restart handler instead of setting arm_pm_restart directly. This enables support for replacing the PSCI restart handler with a different handler if necessary for a specific board.
Select a priority of 129 to indicate a higher than default priority, but keep it as low as possible since PSCI reset is known to fail on some boards. Acked-by: Arnd Bergmann <[email protected]> Reviewed-by: Wolfram Sang <[email protected]> Tested-by: Wolfram Sang <[email protected]> Signed-off-by: Guenter Roeck <[email protected]> Acked-by: Lorenzo Pieralisi <[email protected]> Signed-off-by: Thierry Reding <[email protected]> --- drivers/firmware/psci/psci.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c index 84f4ff351c62..a41c6ba043a2 100644 --- a/drivers/firmware/psci/psci.c +++ b/drivers/firmware/psci/psci.c @@ -250,7 +250,8 @@ static int get_set_conduit_method(struct device_node *np) return 0; } -static void psci_sys_reset(enum reboot_mode reboot_mode, const char *cmd) +static int psci_sys_reset(struct notifier_block *nb, unsigned long action, + void *data) { if ((reboot_mode == REBOOT_WARM || reboot_mode == REBOOT_SOFT) && psci_system_reset2_supported) { @@ -263,8 +264,15 @@ static void psci_sys_reset(enum reboot_mode reboot_mode, const char *cmd) } else { invoke_psci_fn(PSCI_0_2_FN_SYSTEM_RESET, 0, 0, 0); } + + return NOTIFY_DONE; } +static struct notifier_block psci_sys_reset_nb = { + .notifier_call = psci_sys_reset, + .priority = 129, +}; + static void psci_sys_poweroff(void) { invoke_psci_fn(PSCI_0_2_FN_SYSTEM_OFF, 0, 0, 0); @@ -431,7 +439,7 @@ static void __init psci_0_2_set_functions(void) psci_ops.migrate_info_type = psci_migrate_info_type; - arm_pm_restart = psci_sys_reset; + register_restart_handler(&psci_sys_reset_nb); pm_power_off = psci_sys_poweroff; } -- 2.23.0
