diff --git a/drivers/infiniband/hw/i40iw/i40iw_hw.c b/drivers/infiniband/hw/i40iw/i40iw_hw.c
index 615e115247b0dc8284172f7a7988c152c1e9cb30..3ee0cad96bc688457475a1f727969e7f05336e62 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_hw.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_hw.c
@@ -107,7 +107,8 @@ u32 i40iw_initialize_hw_resources(struct i40iw_device *iwdev)
 
 	spin_lock_init(&iwdev->resource_lock);
 	spin_lock_init(&iwdev->qptable_lock);
-	mrdrvbits = 24 - get_count_order(iwdev->max_mr);
+	/* stag index mask has a minimum of 14 bits */
+	mrdrvbits = 24 - max(get_count_order(iwdev->max_mr), 14);
 	iwdev->mr_stagmask = ~(((1 << mrdrvbits) - 1) << (32 - mrdrvbits));
 	return 0;
 }