From: Richard Cochran <richardcochran@gmail.com>
Date: Sun, 21 Dec 2014 18:47:06 +0000 (+0100)
Subject: timecounter: keep track of accumulated fractional nanoseconds
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~134^2~328^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2eebdde6528a722fbf8e2cffcf7aa52cbb4c2de0;p=pandora-kernel.git

timecounter: keep track of accumulated fractional nanoseconds

The current timecounter implementation will drop a variable amount
of resolution, depending on the magnitude of the time delta. In
other words, reading the clock too often or too close to a time
stamp conversion will introduce errors into the time values. This
patch fixes the issue by introducing a fractional nanosecond field
that accumulates the low order bits.

Reported-by: Janusz Użycki <j.uzycki@elproma.com.pl>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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