6.10-stable review patch. If anyone has any objections, please let me know.
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From: Miao Wang shankerwangmiao@gmail.com
commit e688c220732e518c2eb1639e9ef77d4a9311713c upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/loongarch/kernel/efi.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- 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)