[tip:x86/urgent] x86/irqflags: Mark native_restore_fl extern inline

[tip-bot for Nick Desaulniers <tipbot@zytor.com>]

Commit-ID:  1f59a4581b5ecfe9b4f049a7a2cf904d8352842d
Gitweb:     https://git.kernel.org/tip/1f59a4581b5ecfe9b4f049a7a2cf904d8352842d
Author:     Nick Desaulniers <ndesaulniers@google.com>
AuthorDate: Mon, 27 Aug 2018 14:40:09 -0700
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Thu, 30 Aug 2018 11:37:09 +0200

x86/irqflags: Mark native_restore_fl extern inline

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

Fixes: 208cbb325589 ("x86/irqflags: Provide a declaration for native_save_fl")
Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180827214011.55428-1-ndesaulniers@google.com

---
 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 */