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Re: [rtl] HRT_FROM_8254() bug

To: frank mori hess <fmhess@students.uiuc.edu>
Subject: Re: [rtl] HRT_FROM_8254() bug
From: Michael Barabanov <baraban@fsmlabs.com>
Date: Tue, 15 May 2001 21:44:08 +0400
Cc: rtl@rtlinux.org
In-Reply-To: <Pine.GSO.4.31.0105101947010.29532-100000@ux13.cso.uiuc.edu>; from fmhess@students.uiuc.edu on Thu, May 10, 2001 at 08:15:09PM -0500
Organization: FSMLabs
References: <Pine.GSO.4.31.0105101947010.29532-100000@ux13.cso.uiuc.edu>
User-Agent: Mutt/1.3.17i

Thanks for your notice; the second "idivl" in hrt_to_8254
in include/i386/rtl_time.h should actually be "divl".

Michael.

frank mori hess (fmhess@students.uiuc.edu) wrote:
> 
> Hello,
> 
> I am using rtlinux-3.0, kernel2.2.18 on an i386 (amd k6-2) and I have
> noticed that HRT_FROM_8254() bugs if you give it an argument greater than
> 0x7FFFFFFF.  This is causing crashes (division errors) when I call the
> compatibility function rt_task_make_periodic(), which calls
> HRT_FROM_8254() to convert from RTIME to hrtime_t to translate arguments
> into the newer api.
> 
> Frank
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References:
- HRT_FROM_8254() bug
  - From: frank mori hess <fmhess@students.uiuc.edu>

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