diff options
Diffstat (limited to 'drivers/firmware/efi/reboot.c')
| -rw-r--r-- | drivers/firmware/efi/reboot.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/firmware/efi/reboot.c b/drivers/firmware/efi/reboot.c index 62ead9b9d871..22874544d301 100644 --- a/drivers/firmware/efi/reboot.c +++ b/drivers/firmware/efi/reboot.c @@ -5,6 +5,8 @@ #include <linux/efi.h> #include <linux/reboot.h> +static void (*orig_pm_power_off)(void); + int efi_reboot_quirk_mode = -1; void efi_reboot(enum reboot_mode reboot_mode, const char *__unused) @@ -51,6 +53,12 @@ bool __weak efi_poweroff_required(void) static void efi_power_off(void) { efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); + /* + * The above call should not return, if it does fall back to + * the original power off method (typically ACPI poweroff). + */ + if (orig_pm_power_off) + orig_pm_power_off(); } static int __init efi_shutdown_init(void) @@ -58,8 +66,10 @@ static int __init efi_shutdown_init(void) if (!efi_enabled(EFI_RUNTIME_SERVICES)) return -ENODEV; - if (efi_poweroff_required()) + if (efi_poweroff_required()) { + orig_pm_power_off = pm_power_off; pm_power_off = efi_power_off; + } return 0; } |