From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 5 Dec 2013 17:24:06 +0000 (+0000)
Subject: sfc: Maintain current frequency adjustment when applying a time offset
X-Git-Tag: v3.13-rc4~3^2~32^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd6fe65e923175e4f2e9fb585b1d78c6bf580fc6;p=pandora-kernel.git

sfc: Maintain current frequency adjustment when applying a time offset

There is a single MCDI PTP operation for setting the frequency
adjustment and applying a time offset to the hardware clock.  When
applying a time offset we should not change the frequency adjustment.

These two operations can now be requested separately but this requires
a flash firmware update.  Keep using the single operation, but
remember and repeat the previous frequency adjustment.

Fixes: 7c236c43b838 ('sfc: Add support for IEEE-1588 PTP')
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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