From 35f9a7a380728a94d417e5824a866f969423ac83 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 6 Dec 2013 22:10:46 +0000
Subject: [PATCH] sfc: Rate-limit log message for PTP packets without a
 matching timestamp event

In case of a flood of PTP packets, the timestamp peripheral and MC
firmware on the SFN[56]322F boards may not be able to provide
timestamp events for all packets.  Don't complain too much about this.

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