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Please backport and integration the upstream linux commit below:
commit e5ebe63214d44d4dcf43df02edf3613e04d671b9
Author: Ursula Braun <ubr...@linux.vnet.ibm.com>
Date: Fri Dec 11 12:27:55 2015 +0100
qeth: initialize net_device with carrier off
/sys/class/net/<interface>/operstate for an active qeth network
interface offen shows "unknown", which translates to "state UNKNOWN
in output of "ip link show". It is caused by a missing initialization
of the __LINK_STATE_NOCARRIER bit in the net_device state field.
This patch adds a netif_carrier_off() invocation when creating the
net_device for a qeth device.
Signed-off-by: Ursula Braun <ubr...@linux.vnet.ibm.com>
Acked-by: Hendrik Brueckner <brueck...@linux.vnet.ibm.com>
Reference-ID: Bugzilla 133209
Signed-off-by: David S. Miller <da...@davemloft.net>
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: architecture-s39064 bot-comment bugnameltc-136623 severity-medium
targetmilestone-inin1604
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qeth: layer2 reports unknown state to network tools.
https://bugs.launchpad.net/bugs/1541907
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