From: Raanan Avargil <raanan.avargil@intel.com>
Date: Sun, 19 Jul 2015 13:33:20 +0000 (+0300)
Subject: e1000e: Fix tight loop implementation of systime read algorithm
X-Git-Tag: omap-for-v4.3/fixes-rc1~110^2~218^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37b12910dd11d9ab969f2c310dc9160b7f3e3405;p=pandora-kernel.git

e1000e: Fix tight loop implementation of systime read algorithm

Change the algorithm. Read systimel twice and check for overflow.
If there was no overflow, use the first value.
If there was an overflow, read systimeh again and use the second
systimel value.

Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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