viafb: returns 0 two too early

Otherwise this will already return 0 if iteration MAXLOOP-2 occurs in the
first loop.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Cc: Joseph Chan <josephchan@via.com.tw>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/video/via/accel.c

@@ -267,13 +267,17 @@ int viafb_wait_engine_idle(void)
 	int loop = 0;
 
 	while (!(readl(viaparinfo->io_virt + VIA_REG_STATUS) &
-			VIA_VR_QUEUE_BUSY) && (loop++ < MAXLOOP))
+			VIA_VR_QUEUE_BUSY) && (loop < MAXLOOP)) {
+		loop++;
 		cpu_relax();
+	}
 
 	while ((readl(viaparinfo->io_virt + VIA_REG_STATUS) &
 		    (VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY)) &&
-		    (loop++ < MAXLOOP))
+		    (loop < MAXLOOP)) {
+		loop++;
 		cpu_relax();
+	}
 
 	return loop >= MAXLOOP;
 }