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[Dimitri John Ledkov <launchpad@xxxxxxxxxxxx>]

Please note, that given that this is for s390x architecture only, it is
only needed in xenial kernel, and is not required for SRU into any
previous kernels.

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https://bugs.launchpad.net/bugs/1541907

Title:
  qeth: layer2 reports unknown state to network tools.

Status in linux package in Ubuntu:
  Fix Committed
Status in linux-lts-utopic package in Ubuntu:
  New
Status in linux source package in Trusty:
  Fix Committed
Status in linux-lts-utopic source package in Trusty:
  Fix Committed
Status in linux source package in Vivid:
  Fix Committed
Status in linux source package in Wily:
  Fix Committed
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  Please backport and integration the upstream linux commit below:

  commit e5ebe63214d44d4dcf43df02edf3613e04d671b9
  Author: Ursula Braun <ubraun@xxxxxxxxxxxxxxxxxx>
  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 <ubraun@xxxxxxxxxxxxxxxxxx>
      Acked-by: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
      Reference-ID: Bugzilla 133209
      Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>

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