From f47ba80080ab81ad513f843407bec7178fed8857 Mon Sep 17 00:00:00 2001
From: =?utf8?q?N=C3=A9lio=20Laranjeiro?= <nelio.laranjeiro@6wind.com>
Date: Mon, 12 Mar 2018 14:43:17 +0100
Subject: [PATCH] net/mlx5: remove kernel version check

Kernel version check was introduced in
commit 3a49ffe38a95 ("net/mlx5: fix link status query")
due to a bug fixed by
commit ef09a7fc7620 ("net/mlx5: fix inconsistent link status query")

This patch restore the previous behavior as described in Linux API.

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
 drivers/net/mlx5/mlx5_ethdev.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index dd46124ecf..26f13fb1b3 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -18,11 +18,9 @@
 #include <net/if.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
-#include <sys/utsname.h>
 #include <netinet/in.h>
 #include <linux/ethtool.h>
 #include <linux/sockios.h>
-#include <linux/version.h>
 #include <fcntl.h>
 #include <stdalign.h>
 #include <sys/un.h>
@@ -734,20 +732,15 @@ mlx5_force_link_status_change(struct rte_eth_dev *dev, int status)
 int
 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 {
-	struct utsname utsname;
-	int ver[3];
 	int ret;
 	struct rte_eth_link dev_link = dev->data->dev_link;
 
-	if (uname(&utsname) == -1 ||
-	    sscanf(utsname.release, "%d.%d.%d",
-		   &ver[0], &ver[1], &ver[2]) != 3 ||
-	    KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
-		ret = mlx5_link_update_unlocked_gset(dev);
-	else
+	ret = mlx5_link_update_unlocked_gset(dev);
+	if (ret) {
 		ret = mlx5_link_update_unlocked_gs(dev);
-	if (ret)
-		return ret;
+		if (ret)
+			return ret;
+	}
 	/* If lsc interrupt is disabled, should always be ready for traffic. */
 	if (!dev->data->dev_conf.intr_conf.lsc) {
 		mlx5_link_start(dev);
-- 
2.20.1