[PATCH] ACPI / init: Run acpi_early_init() before timekeeping_init()

["Lee, Chun-Yi" <joeyli.kernel@gmail.com>]

This is a variant patch from Rafael J. Wysocki's
ACPI / init: Run acpi_early_init() before efi_enter_virtual_mode()

According to Matt Fleming, if acpi_early_init() was executed before
efi_enter_virtual_mode(), the EFI initialization could benefit from
it, so Rafael's patch makes that happen.

And, we want accessing ACPI TAD device to set system clock, so move
acpi_early_init() before timekeeping_init(). This final position is
also before efi_enter_virtual_mode().

v2:
Move acpi_early_init() before timekeeping_init() to prepare setting
system clock with ACPI TAD.

v1:
Rafael J. Wysocki
ACPI / init: Run acpi_early_init() before efi_enter_virtual_mode()

Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Matt Fleming <matt@console-pimps.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Tested-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
---
 init/main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/init/main.c b/init/main.c
index febc511..b6d93c8 100644
--- a/init/main.c
+++ b/init/main.c
@@ -565,6 +565,7 @@ asmlinkage void __init start_kernel(void)
 	init_timers();
 	hrtimers_init();
 	softirq_init();
+	acpi_early_init();
 	timekeeping_init();
 	time_init();
 	sched_clock_postinit();
@@ -641,7 +642,6 @@ asmlinkage void __init start_kernel(void)
 
 	check_bugs();
 
-	acpi_early_init(); /* before LAPIC and SMP init */
 	sfi_init_late();
 
 	if (efi_enabled(EFI_RUNTIME_SERVICES)) {
-- 
1.6.4.2