Patch "IB/mlx4: Fix port query for 56Gb Ethernet links" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

IB/mlx4: Fix port query for 56Gb Ethernet links

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
ib-mlx4-fix-port-query-for-56gb-ethernet-links.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Saeed Mahameed <[email protected]>
Date: Thu, 10 Nov 2016 11:30:59 +0200
Subject: IB/mlx4: Fix port query for 56Gb Ethernet links

From: Saeed Mahameed <[email protected]>

commit 6fa26208206c406fa529cd73f7ae6bf4181e270b upstream.

Report the correct speed in the port attributes when using a 56Gbps ethernet link. Without this change the field is incorrectly set to 10.

---
 drivers/infiniband/hw/mlx4/main.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

@@ -630,9 +630,11 @@ static int eth_link_query_port(struct ib
 	if (err)
 		goto out;
 
-	props->active_width	=  (((u8 *)mailbox->buf)[5] == 0x40) ?
-						IB_WIDTH_4X : IB_WIDTH_1X;
-	props->active_speed	= IB_SPEED_QDR;
+	props->active_width	=  (((u8 *)mailbox->buf)[5] == 0x40) ||
+				   (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
+					   IB_WIDTH_4X : IB_WIDTH_1X;
+	props->active_speed	=  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
+					   IB_SPEED_FDR : IB_SPEED_QDR;
 	props->port_cap_flags	= IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 	props->gid_tbl_len	= mdev->dev->caps.gid_table_len[port];
 	props->max_msg_sz	= mdev->dev->caps.max_msg_sz;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/ib-mlx4-fix-port-query-for-56gb-ethernet-links.patch