diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c
index bd54cd0de39af13fc4170665878ed63ac1af4acb..982eeee0ae98017501268bce19038d6693266b2e 100644
--- a/drivers/video/tridentfb.c
+++ b/drivers/video/tridentfb.c
@@ -905,7 +905,6 @@ static int tridentfb_set_par(struct fb_info *info)
 	vblankstart = var->yres;
 	vblankend = vtotal + 2;
 
-	enable_mmio();
 	crtc_unlock();
 	write3CE(CyberControl, 8);