[PATCH] x86/irqflags: mark native_restore_fl extern inline

[Nick Desaulniers]

Fixes commit 208cbb325589 ("x86/irqflags: Provide a declaration for
native_save_fl")

This should have been marked extern inline in order to pick up the out
of line definition in arch/x86/kernel/irqflags.S.

Cc: stable@xxxxxxxxxxxxxxx # 4.18, 4.14, 4.9, 4.4
Reported-by: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
---
 arch/x86/include/asm/irqflags.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index c14f2a74b2be..15450a675031 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -33,7 +33,8 @@ extern inline unsigned long native_save_fl(void)
 	return flags;
 }
 
-static inline void native_restore_fl(unsigned long flags)
+extern inline void native_restore_fl(unsigned long flags);
+extern inline void native_restore_fl(unsigned long flags)
 {
 	asm volatile("push %0 ; popf"
 		     : /* no output */
-- 
2.19.0.rc0.228.g281dcd1b4d0-goog