From: Jesse Brandeburg <jesse.brandeburg@intel.com>
Date: Fri, 14 Feb 2014 02:14:40 +0000 (+0000)
Subject: i40e/i40evf: enable hardware feature head write back
X-Git-Tag: v3.15-rc1~113^2~124^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1943d8ba9507d49fa5cdb51eb1b63810d94e1969;p=pandora-kernel.git

i40e/i40evf: enable hardware feature head write back

The hardware supports a feature to avoid updating the descriptor
ring by marking each descriptor with a DD bit, and instead
writes a memory location with an update to where the driver
should clean up to.  Enable this feature.

Change-ID: I5da4e0681f0b581a6401c950a81808792267fe57
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

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