linux-kernel - [PTP] Implement clock_getres() function correctly

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 4 Dec 2011 18:06:28 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	LKML <linux-kernel@...r.kernel.org>
cc:	Richard Cochran <richard.cochran@...cron.at>,
	John Stultz <johnstul@...ibm.com>
Subject: [PTP] Implement clock_getres() function correctly

clock_getres() needs to put the resolution into the provided timespec
and return 0 in case of success.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: stable@...r.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)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/