gru: expicitly set instruction status to active

Explicitly set GRU instructions to "ACTIVE".  This eliminates the need for
barriers that would have been necessary to prevent reading the instruction
"status" field before the GRU had actually started the instruction.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/misc/sgi-gru/gruhandles.c

@@ -54,8 +54,8 @@ static void start_instruction(void *h)
 {
 	unsigned long *w0 = h;
 
-	wmb();		/* setting CMD bit must be last */
-	*w0 = *w0 | 1;
+	wmb();		/* setting CMD/STATUS bits must be last */
+	*w0 = *w0 | 0x20001;
 	gru_flush_cache(h);
 }