Re: [PATCH] stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set

From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Date: Mon, 16 May 2016 12:41:07 -0300

Commit f748be531d70 ("stmmac: support new GMAC4") reverted a previous fix
by mistake. This commit re-applies said fix:

  commit dec2165ff38a99f937fe61875d102c6c8596c815
  Author: Sonic Zhang [off-list ref]
  Date:   Thu Jan 22 14:55:57 2015 +0800
  stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set

  Clear the TX COE bit when force_thresh_dma_mode is set even hardware
  dma capability says support.

  Tested on BF609.

  Signed-off-by: Sonic Zhang [off-list ref]
  Acked-by: Giuseppe Cavallaro [off-list ref]
  Signed-off-by: David S. Miller [off-list ref]

Tested on LPC4350 Hitex board.

Fixes: f748be531d70 ("stmmac: support new GMAC4")
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

Applied.