From: Roman Zippel <zippel@linux-m68k.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: john stultz <johnstul@us.ibm.com>,
Martin Ziegler <ziegler@uni-freiburg.de>,
lkml <linux-kernel@vger.kernel.org>,
stable@kernel.org
Subject: Re: [PATCH] fix adjtimex() freq return error
Date: Wed, 20 Aug 2008 14:02:23 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.64.0808201352190.2507@localhost.localdomain> (raw)
In-Reply-To: <20080819204752.d9540f15.akpm@linux-foundation.org>
Hi,
On Tue, 19 Aug 2008, Andrew Morton wrote:
> On Tue, 19 Aug 2008 19:29:06 -0700 john stultz <johnstul@us.ibm.com> wrote:
>
> > Martin Ziegler reported a bug in adjtimex(), where odd positive
> > frequencies are reduced by 1 while negative values are correct.
To put this in perspective one should also know that 1 here means an error
of 2^-16ppm or less than 0.02nsec.
When I wrote this code, I noticed that the rounding isn't perfect, but
OTOH the error is so small that it can't have any practical relevance.
AFAIC the old code is fine as is.
bye, Roman
next prev parent reply other threads:[~2008-08-20 12:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-20 2:29 john stultz
2008-08-20 3:47 ` Andrew Morton
2008-08-20 12:02 ` Roman Zippel [this message]
2008-08-21 3:07 ` Roman Zippel
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