From: Matthew Kirkwood <matthew@hairy.beasts.org>
To: "Måns Rullgård" <mru@kth.se>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: floppy motor spins when floppy module not installed
Date: Fri, 12 Dec 2003 16:00:00 +0000 (GMT) [thread overview]
Message-ID: <Pine.LNX.4.58.0312121559130.29730@sphinx.mythic-beasts.com> (raw)
In-Reply-To: <yw1xy8tixe96.fsf@kth.se>
On Fri, 12 Dec 2003, Måns Rullgård wrote:
> > It is not a broken BIOS! The BIOS timer that ticks 18.206 times per
> > second has an ISR that, in addition to keeping time, turns OFF the FDC
> > motor after two seconds of inactivity. This ISR is taken away by
> > Linux. Therefore Linux must turn off that motor! It is a Linux bug,
> > not a BIOS bug. Linux took control away from the BIOS during boot.
>
> OK, but why doesn't it affect all machines?
Most likely, other machines take longer than two seconds from
probing the floppy to booting the kernel.
Matthew.
next prev parent reply other threads:[~2003-12-12 16:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-12 13:57 Dale Mellor
2003-12-12 14:18 ` Måns Rullgård
2003-12-12 15:04 ` Richard B. Johnson
2003-12-12 15:11 ` Måns Rullgård
2003-12-12 15:20 ` Richard B. Johnson
2003-12-12 15:33 ` Måns Rullgård
2003-12-12 16:05 ` Petr Vandrovec
2003-12-12 16:27 ` Måns Rullgård
2003-12-12 16:41 ` Petr Vandrovec
2003-12-12 16:00 ` Matthew Kirkwood [this message]
2003-12-12 19:28 ` John Bradford
2003-12-12 19:47 ` Richard B. Johnson
2003-12-13 6:18 ` Joshua Schmidlkofer
2003-12-15 14:37 ` Richard B. Johnson
2003-12-13 10:40 ` John Bradford
2003-12-15 14:50 ` Richard B. Johnson
2003-12-15 20:24 ` John Bradford
2003-12-13 13:18 ` Helge Hafting
2003-12-13 16:42 ` Joshua Schmidlkofer
2003-12-12 14:59 ` Richard B. Johnson
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