diff options
| author | Miao Wang <shankerwangmiao@gmail.com> | 2024-08-07 17:37:11 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-08-07 17:37:11 +0800 |
| commit | e688c220732e518c2eb1639e9ef77d4a9311713c (patch) | |
| tree | 0957d55ce95047ed503715a507dde45a5ab4fbfd /arch/loongarch | |
| parent | de9c2c66ad8e787abec7c9d7eff4f8c3cdd28aed (diff) | |
LoongArch: Enable general EFI poweroff method
efi_shutdown_init() can register a general sys_off handler named
efi_power_off(). Enable this by providing efi_poweroff_required(),
like arm and x86. Since EFI poweroff is also supported on LoongArch,
and the enablement makes the poweroff function usable for hardwares
which lack ACPI S5.
We prefer ACPI poweroff rather than EFI poweroff (like x86), so we only
require EFI poweroff if acpi_gbl_reduced_hardware or acpi_no_s5 is true.
Cc: stable@vger.kernel.org
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Miao Wang <shankerwangmiao@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/kernel/efi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/efi.c b/arch/loongarch/kernel/efi.c index 000825406c1f..2bf86aeda874 100644 --- a/arch/loongarch/kernel/efi.c +++ b/arch/loongarch/kernel/efi.c @@ -66,6 +66,12 @@ void __init efi_runtime_init(void) set_bit(EFI_RUNTIME_SERVICES, &efi.flags); } +bool efi_poweroff_required(void) +{ + return efi_enabled(EFI_RUNTIME_SERVICES) && + (acpi_gbl_reduced_hardware || acpi_no_s5); +} + unsigned long __initdata screen_info_table = EFI_INVALID_TABLE_ADDR; #if defined(CONFIG_SYSFB) || defined(CONFIG_EFI_EARLYCON) |