[PATCH] uml: move va_copy conditional def

GCC 2.95 uses __va_copy instead of va_copy.  Handle it inside compiler.h
instead of in a casual file, and avoid the risk that this breaks with a newer
compiler (which it could do).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/kernel/skas/uaccess.c

@@ -3,6 +3,7 @@
  * Licensed under the GPL
  */
 
+#include "linux/compiler.h"
 #include "linux/stddef.h"
 #include "linux/kernel.h"
 #include "linux/string.h"
@@ -61,8 +62,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr)
 	void *arg;
 	int *res;
 
-	/* Some old gccs recognize __va_copy, but not va_copy */
-	__va_copy(args, *(va_list *)arg_ptr);
+	va_copy(args, *(va_list *)arg_ptr);
 	addr = va_arg(args, unsigned long);
 	len = va_arg(args, int);
 	is_write = va_arg(args, int);

include/linux/compiler-gcc2.h

@@ -22,3 +22,8 @@
 # define __attribute_pure__	__attribute__((pure))
 # define __attribute_const__	__attribute__((__const__))
 #endif
+
+/* GCC 2.95.x/2.96 recognize __va_copy, but not va_copy. Actually later GCC's
+ * define both va_copy and __va_copy, but the latter may go away, so limit this
+ * to this header */
+#define va_copy			__va_copy