linux-kernel - [12/45] ptp: Fix clock

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Date:	Fri, 16 Dec 2011 11:40:19 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Thomas Gleixner <tglx@...utronix.de>,
	John Stultz <john.stultz@...aro.org>,
	Richard Cochran <richard.cochran@...cron.at>
Subject: [12/45] ptp: Fix clock_getres() implementation

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Gleixner <tglx@...utronix.de>

commit d68fb11c3dae75c8331538dcf083a65e697cc034 upstream.

The clock_getres() function must return the resolution in the timespec
argument and return 0 for success.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: John Stultz <john.stultz@...aro.org>
Cc: Richard Cochran <richard.cochran@...cron.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/ptp/ptp_clock.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/ptp/ptp_clock.c
+++ b/drivers/ptp/ptp_clock.c
@@ -101,7 +101,9 @@ static s32 scaled_ppm_to_ppb(long ppm)
 
 static int ptp_clock_getres(struct posix_clock *pc, struct timespec *tp)
 {
-	return 1; /* always round timer functions to one nanosecond */
+	tp->tv_sec = 0;
+	tp->tv_nsec = 1;
+	return 0;
 }
 
 static int ptp_clock_settime(struct posix_clock *pc, const struct timespec *tp)


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