diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b372f59..8209387 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -172,6 +172,7 @@
 	int			num_pds;
 	int			reserved_pds;
 	int			mtt_entry_sz;
+	u32			max_msg_sz;
 	u32			page_size_cap;
 	u32			flags;
 	u16			stat_rate_support;