** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic

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https://bugs.launchpad.net/bugs/1781895

Title:
  Bluetooth: Redpine: Bionics: L2test transfer is failed to start in
  Ubuntu 18.04

Status in linux package in Ubuntu:
  Triaged
Status in linux-oem package in Ubuntu:
  Confirmed
Status in linux source package in Bionic:
  Triaged
Status in linux-oem source package in Bionic:
  New

Bug description:
  SRU Justification
  -----------------

  Impact:
  -------
       Bluetooth l2test is not getting started with rsi driver.

  Test Case:
  ----------
       1. Insert redpine modules with dev_oper_mode=13/4/5/6/14.

       2. Check bluetooth device is created or not.
          $ hciconfig -a

       3. Insert other thirdparty module to run l2test.

       4. Enable piscan for both interfaces
          $ hciconfig -a hci0 piscan  # lets say, hci0 is created for Redpine
          $ hciconfig -a hci1 piscan  # lets say, hci1 is created for 
thirdparty BT device 

       5. Open two terminals and then, start l2test with below commands.
          Terminal 1: Keep rsi module is in Transmit mode.
             $ l2test -i hci0 -s <hci1 BD address>
          Terminal 2: Keep third party device is in receive mode
             $ l2test -i hci1 -r

       6. l2test will not run and will fail after few seconds

  Fix:
  ----
      skb->data is having some extra bytes rather than expected size , which is 
Incorrect. Hence, removed redundant bytes from skb using skb_trim().

  Regression petential:
  ---------------------
      Ran L2test for 2 hours and didn't see any issue.

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