From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754810Ab1LDRGe (ORCPT ); Sun, 4 Dec 2011 12:06:34 -0500 Received: from www.linutronix.de ([62.245.132.108]:52580 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752861Ab1LDRGb (ORCPT ); Sun, 4 Dec 2011 12:06:31 -0500 Date: Sun, 4 Dec 2011 18:06:28 +0100 (CET) From: Thomas Gleixner To: LKML cc: Richard Cochran , John Stultz Subject: [PTP] Implement clock_getres() function correctly Message-ID: User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org clock_getres() needs to put the resolution into the provided timespec and return 0 in case of success. Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org --- diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c index cf3f999..6b0c02a 100644 --- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -101,7 +101,10 @@ 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 */ + /* Resolution is 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)