[PATCH 17/21] xfree86: Clean up powerpc barrier decls

[Adam Jackson]

I think the externs are there for the non-gcc case?  And maybe there was
some assembly code to implement that once?  Whatever, at this point on
ppc the compiler is either gcc or willing to pretend.  The macros below
the decls take care of the actual eieio so the externs can just go.

Also remove a comment that maybe made sense once upon a time.

Signed-off-by: Adam Jackson <ajax at redhat.com>
---
 hw/xfree86/common/compiler.h | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/hw/xfree86/common/compiler.h b/hw/xfree86/common/compiler.h
index 5fd0ea0..3430585 100644
--- a/hw/xfree86/common/compiler.h
+++ b/hw/xfree86/common/compiler.h
@@ -136,11 +136,6 @@ extern _X_EXPORT void xf86WriteMmio32LeNB (void *, unsigned long, unsigned int);
 #endif                          /* __sparc__,  __arm32__, __alpha__, __nds32__ */
 #endif                          /* __arm__ */
 
-#if defined(__powerpc__) && !defined(__OpenBSD__)
-extern void mem_barrier(void);
-extern void write_mem_barrier(void);
-#endif                          /* __powerpc__ && !__OpenBSD */
-
 #endif                          /* NO_INLINE || DO_PROTOTYPES */
 
 #ifdef __GNUC__
@@ -195,7 +190,7 @@ extern void write_mem_barrier(void);
 
 #elif defined __powerpc__
 
-#ifndef eieio                   /* We deal with arch-specific eieio() routines above... */
+#ifndef eieio
 #define eieio() __asm__ __volatile__ ("eieio" ::: "memory")
 #endif                          /* eieio */
 #define mem_barrier()	eieio()
-- 
1.9.0