Index: sys/dev/mana/gdma_main.c
===================================================================
--- sys/dev/mana/gdma_main.c
+++ sys/dev/mana/gdma_main.c
@@ -221,7 +221,7 @@
 	if (!gc || !gmi)
 		return EINVAL;
 
-	if (length < PAGE_SIZE || (length != roundup_pow_of_two(length)))
+	if (length < PAGE_SIZE || !powerof2(length))
 		return EINVAL;
 
 	err = bus_dma_tag_create(bus_get_dma_tag(gc->dev),	/* parent */
Index: sys/dev/mlx4/mlx4_core/mlx4_alloc.c
===================================================================
--- sys/dev/mlx4/mlx4_core/mlx4_alloc.c
+++ sys/dev/mlx4/mlx4_core/mlx4_alloc.c
@@ -173,7 +173,7 @@
 		     u32 reserved_bot, u32 reserved_top)
 {
 	/* num must be a power of 2 */
-	if (num != roundup_pow_of_two(num))
+	if (!is_power_of_2(num))
 		return -EINVAL;
 
 	bitmap->last = 0;
Index: sys/dev/mlx5/mlx5_ib/mlx5_ib_mem.c
===================================================================
--- sys/dev/mlx5/mlx5_ib/mlx5_ib_mem.c
+++ sys/dev/mlx5/mlx5_ib/mlx5_ib_mem.c
@@ -78,10 +78,10 @@
 	}
 
 	if (i) {
-		m = min_t(unsigned long, ilog2(roundup_pow_of_two(i)), m);
+		m = min_t(unsigned long, order_base_2(i), m);
 
 		if (order)
-			*order = ilog2(roundup_pow_of_two(i) >> m);
+			*order = order_base_2(i) - m;
 
 		*ncont = DIV_ROUND_UP(i, (1 << m));
 	} else {