linux-kernel - [PATCH net-next 04/11] ptp: fec: use helpers for converting ns to timespec.

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Message-Id: <61ce28ae31fffa338831a8730e7c60f27a2ad62d.1427835485.git.richardcochran@gmail.com>
Date:	Tue, 31 Mar 2015 23:08:09 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	<netdev@...r.kernel.org>
Cc:	<linux-kernel@...r.kernel.org>, Amir Vadai <amirv@...lanox.com>,
	Arnd Bergmann <arnd@...aro.org>,
	Baolin Wang <baolin.wang@...aro.org>,
	David Miller <davem@...emloft.net>,
	Frank Li <Frank.Li@...escale.com>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	Jacob Keller <jacob.e.keller@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	John Stultz <john.stultz@...aro.org>,
	Luwei Zhou <b45643@...escale.com>,
	Matthew Vick <matthew.vick@...el.com>,
	Michael Chan <mchan@...adcom.com>,
	Prashant Sreedharan <prashant@...adcom.com>,
	Rayagond K <rayagond@...avyalabs.com>,
	Sonic Zhang <sonic.zhang@...log.com>,
	Sony Chacko <sony.chacko@...gic.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH net-next 04/11] ptp: fec: use helpers for converting ns to timespec.

This patch changes the driver to use ns_to_timespec64() and
timespec64_to_ns() instead of open coding the same logic.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@...il.com>
---
 drivers/net/ethernet/freescale/fec_ptp.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c
index b833993..a583d89 100644
--- a/drivers/net/ethernet/freescale/fec_ptp.c
+++ b/drivers/net/ethernet/freescale/fec_ptp.c
@@ -395,15 +395,13 @@ static int fec_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
 	struct fec_enet_private *adapter =
 	    container_of(ptp, struct fec_enet_private, ptp_caps);
 	u64 ns;
-	u32 remainder;
 	unsigned long flags;
 
 	spin_lock_irqsave(&adapter->tmreg_lock, flags);
 	ns = timecounter_read(&adapter->tc);
 	spin_unlock_irqrestore(&adapter->tmreg_lock, flags);
 
-	ts->tv_sec = div_u64_rem(ns, 1000000000ULL, &remainder);
-	ts->tv_nsec = remainder;
+	*ts = ns_to_timespec64(ns);
 
 	return 0;
 }
@@ -433,8 +431,7 @@ static int fec_ptp_settime(struct ptp_clock_info *ptp,
 		return -EINVAL;
 	}
 
-	ns = ts->tv_sec * 1000000000ULL;
-	ns += ts->tv_nsec;
+	ns = timespec64_to_ns(ts);
 	/* Get the timer value based on timestamp.
 	 * Update the counter with the masked value.
 	 */
-- 
1.7.10.4

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