x86: fix sparse warnings in acpi/bus.c

Add function definition and extern variables to asm-x86/acpi.h.

All of these are used in bus.c in ifdef(CONFIG_X86) sections, so are
only added to the x86 include headers.  boot.c already includes acpi.h
so no changes are needed there.

Fixes the following:
arch/x86/kernel/acpi/boot.c:83:4: warning: symbol 'acpi_sci_flags' was not declared. Should it be static?
arch/x86/kernel/acpi/boot.c:84:5: warning: symbol 'acpi_sci_override_gsi' was not declared. Should it be static?
arch/x86/kernel/acpi/boot.c:421:13: warning: symbol 'acpi_pic_sci_set_trigger' was not declared. Should it be static?

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 6 deletions

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 8b0d4b7d188a..ce3c0a2cbac4 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -31,6 +31,7 @@
 #include <linux/pm.h>
 #include <linux/device.h>
 #include <linux/proc_fs.h>
+#include <linux/acpi.h>
 #ifdef CONFIG_X86
 #include <asm/mpspec.h>
 #endif
@@ -39,9 +40,6 @@
 
 #define _COMPONENT              ACPI_BUS_COMPONENT
 ACPI_MODULE_NAME("bus");
-#ifdef  CONFIG_X86
-extern void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger);
-#endif
 
 struct acpi_device *acpi_root;
 struct proc_dir_entry *acpi_root_dir;
@@ -653,8 +651,6 @@ void __init acpi_early_init(void)
 
 #ifdef CONFIG_X86
         if (!acpi_ioapic) {
-                extern u8 acpi_sci_flags;
-
                 /* compatible (0) means level (3) */
                 if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) {
                         acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK;
@@ -664,7 +660,6 @@ void __init acpi_early_init(void)
                 acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt,
                                          (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
         } else {
-                extern int acpi_sci_override_gsi;
                 /*
                  * now that acpi_gbl_FADT is initialized,
                  * update it with result from INT_SRC_OVR parsing