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x86/apic: Fix the devicetree build in certain configs

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Without this patch:

  LD      init/built-in.o
  arch/x86/built-in.o: In function `dtb_lapic_setup': kernel/devicetree.c:155:
  undefined reference to `apic_force_enable'
  Makefile:923: recipe for target 'vmlinux' failed
  make: *** [vmlinux] Error 1

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Reviewed-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Jan Beulich <JBeulich@suse.com>
Link: http://lkml.kernel.org/r/1422905231-16067-1-git-send-email-ricardo.ribalda@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ricardo Ribalda Delgado 2015-02-02 20:27:11 +01:00 committed by Ingo Molnar
parent 829bf7af64
commit b273c2c2f2
1 changed files with 8 additions and 0 deletions
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8
arch/x86/include/asm/apic.h
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@ -213,7 +213,15 @@ void register_lapic_address(unsigned long address);
extern void setup_boot_APIC_clock(void);
extern void setup_secondary_APIC_clock(void);
extern int APIC_init_uniprocessor(void);
#ifdef CONFIG_X86_64
static inline int apic_force_enable(unsigned long addr)
{
return -1;
}
#else
extern int apic_force_enable(unsigned long addr);
#endif
extern int apic_bsp_setup(bool upmode);
extern void apic_ap_setup(void);