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x86 / ACPI / sleep: Provide registration for acpi_suspend_lowlevel.

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Which by default will be x86_acpi_suspend_lowlevel.
This registration allows us to register another callback
if there is a need to use another platform specific callback.

Signed-off-by: Liang Tang <liang.tang@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Ben Guthro <benjamin.guthro@citrix.com>
Acked-by: "H. Peter Anvin" <hpa@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Konrad Rzeszutek Wilk
2013-05-14 17:09:16 +00:00
committed by Rafael J. Wysocki
parent 7d13205581
commit d6a77ead21
5 changed files with 14 additions and 3 deletions
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7
arch/x86/kernel/acpi/boot.c
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@@ -44,6 +44,7 @@
#include <asm/mpspec.h>
#include <asm/smp.h>
#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
static int __initdata acpi_force = 0;
u32 acpi_rsdt_forced;
int acpi_disabled;
@@ -559,6 +560,12 @@ static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
int trigger, int polarity) = acpi_register_gsi_pic;
#ifdef CONFIG_ACPI_SLEEP
int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
#else
int (*acpi_suspend_lowlevel)(void);
#endif
/*
* success: return IRQ number (>=0)
* failure: return < 0