IB/mlx4: Fix last allocated object tracking in bitmap allocator



Set last allocated object to the object after the one just allocated
before ORing in the extra top bits.  Also handle the case where this
wraps around.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

parent d998ccce

drivers/net/mlx4/alloc.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -51,8 +51,8 @@ u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap)

	if (obj < bitmap->max) {		if (obj < bitmap->max) {
	set_bit(obj, bitmap->table);		set_bit(obj, bitmap->table);
			bitmap->last = (obj + 1) & (bitmap->max - 1);
	obj \|= bitmap->top;		obj \|= bitmap->top;
	bitmap->last = obj + 1;
	} else		} else
	obj = -1;		obj = -1;