netdev - [PATCH V3 net-next 2/4] ptp: provide the clock's adjusted frequency

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Message-Id: <ec433b80b10270c3b0698998df57290599408a9b.1348332941.git.richardcochran@gmail.com>
Date:	Sat, 22 Sep 2012 19:02:02 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	<netdev@...r.kernel.org>
Cc:	Ben Hutchings <bhutchings@...arflare.com>,
	David Miller <davem@...emloft.net>,
	Jacob Keller <jacob.e.keller@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	John Stultz <john.stultz@...aro.org>,
	Matthew Vick <matthew.vick@...el.com>
Subject: [PATCH V3 net-next 2/4] ptp: provide the clock's adjusted frequency

If the timex.mode field indicates a query, then we provide the value of
the current frequency adjustment.

Signed-off-by: Richard Cochran <richardcochran@...il.com>
---
 drivers/ptp/ptp_clock.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c
index 67e628e..6f7009a 100644
--- a/drivers/ptp/ptp_clock.c
+++ b/drivers/ptp/ptp_clock.c
@@ -148,6 +148,11 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx)
 
 		err = ops->adjfreq(ops, scaled_ppm_to_ppb(tx->freq));
 		ptp->dialed_frequency = tx->freq;
+
+	} else if (tx->modes == 0) {
+
+		tx->freq = ptp->dialed_frequency;
+		err = 0;
 	}
 
 	return err;
-- 
1.7.2.5

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