[ofa-general] [PATCH] mlx4: Fix the value of the pkey_index in the completion

[Dotan Barak]

Fix the value of the pkey_index in the completion to get a valid value for GSI QPs.
Without this fix, incoming GSI packets on port 2 gets invalid pkey index in the completion,
which prevent from the mad layer to send back a response.

Roland: can you please try to push this patch to kernel 2.6.24?

Signed-off-by: Dotan Barak <dotanb at dev.mellanox.co.il>

---

diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 8bf44da..608de9f 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -430,7 +430,7 @@ static int mlx4_ib_poll_one(struct mlx4_ib_cq *cq,
 		wc->dlid_path_bits = (be32_to_cpu(cqe->g_mlpath_rqpn) >> 24) & 0x7f;
 		wc->wc_flags      |= be32_to_cpu(cqe->g_mlpath_rqpn) & 0x80000000 ?
 			IB_WC_GRH : 0;
-		wc->pkey_index     = be32_to_cpu(cqe->immed_rss_invalid) >> 16;
+		wc->pkey_index     = (u16)(be32_to_cpu(cqe->immed_rss_invalid) & 0x7f);
 	}
 
 	return 0;