From 810abe9bb3619c717115ae88a09a92cb35a83171 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 14 Nov 2013 00:42:50 +0000
Subject: [PATCH] pch_gbe: Validate hwtstamp_config completely before applying
 it

hwtstamp_ioctl() should validate all fields of hwtstamp_config
before making any changes.  Currently it sets the TX configuration
before validating the rx_filter field.

Compile-tested only.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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