linux-kernel - [PATCH 1/2] IB/core: Set speed string to SDR for invalid active rates

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Date:   Thu, 15 Mar 2018 17:02:13 +0800
From:   Honggang LI <honli@...hat.com>
To:     dledford@...hat.com, jgg@...pe.ca, linux-rdma@...r.kernel.org
Cc:     noaos@...lanox.com, linux-kernel@...r.kernel.org, honli@...hat.com
Subject: [PATCH 1/2] IB/core: Set speed string to SDR for invalid active rates

From: Honggang Li <honli@...hat.com>

commit f1b65df5a232 ("IB/mlx5: Add support for active_width and
active_speed in RoCE"). Before this patch applied, the mlx5_ib
driver set default active_width and active_speed to IB_WIDTH_4X
and IB_SPEED_QDR.

Now, the active_width and active_speed are zeros if the RoCE port
is in DOWN state. The speed string should be set to " SDR" instead of
a blank string when active_speed is zero.

Signed-off-by: Honggang Li <honli@...hat.com>
---
 drivers/infiniband/core/sysfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 8ae1308eecc7..cf36ff1f0068 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -273,6 +273,7 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
 		break;
 	case IB_SPEED_SDR:
 	default:		/* default to SDR for invalid rates */
+		speed = " SDR";
 		rate = 25;
 		break;
 	}
-- 
2.14.GIT