mlx4_core: Support creation of FMRs with pages smaller than 4K
Don't hard code a test against a minimum page shift of 12, since the
device may support smaller pages. Test against the actual smallest
page size from the device capabilities.
Signed-off-by: Oren Duer <oren@mellanox.co.il>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c
index cb46446..03a9abc 100644
--- a/drivers/net/mlx4/mr.c
+++ b/drivers/net/mlx4/mr.c
@@ -551,7 +551,7 @@
u64 mtt_seg;
int err = -ENOMEM;
- if (page_shift < 12 || page_shift >= 32)
+ if (page_shift < (ffs(dev->caps.page_size_cap) - 1) || page_shift >= 32)
return -EINVAL;
/* All MTTs must fit in the same page */