From: David Newall <david@davidnewall.com>
To: mhw@WittsEnd.com
Cc: Andrey Borzenkov <arvidjaar@mail.ru>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: Re: 2.6.24: Serial disabled in BIOS but serial modules still loaded (probably PnP related)
Date: Sun, 25 Nov 2007 18:24:07 +1030 [thread overview]
Message-ID: <47492A1F.4030106@davidnewall.com> (raw)
In-Reply-To: <1195962922.5044.8.camel@canyon.wittsend.com>
Michael H. Warfield wrote:
> On Sat, 2007-11-24 at 23:36 +0300, Andrey Borzenkov wrote:
>
>> I have no COM port on notebook (without port replicator which I do not have)
>> so COM is disabled in BIOS. No ttyS* is detected during boot (and no device
>> created) but I just noticed that serial modules are still loaded. Well, this
>> partially defeats the purpose of disabling COM port - the intention was to
>> free resources by *not* loading unneeded modules ...
>>
>
>
>> This may have something to do with (ACPI) PnP which apparently believes COM is alive.
>> Notebook is Toshiba Portege 4000.
>>
>
> Nice... What's this then?
>
>
>> 00:09 PNP0501 16550A-compatible serial port
>> state = active
>> io 0x3f8-0x3ff
>> irq 5
>>
This doesn't mean that a port (ie connector) is present. My notebook
also has the electronics without the physical connector.
next prev parent reply other threads:[~2007-11-25 7:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-24 20:36 2.6.24: Serial disabled in BIOS but serial modules still loaded (probably PnP related) Andrey Borzenkov
2007-11-24 23:09 ` Yinghai Lu
2007-11-25 16:50 ` Andrey Borzenkov
2007-11-25 3:55 ` Michael H. Warfield
2007-11-25 7:54 ` David Newall [this message]
[not found] <fa.P01QcmUf2f3DN4etI8KJYFdaLnE@ifi.uio.no>
2007-11-25 18:39 ` Robert Hancock
2007-11-25 20:01 ` Andrey Borzenkov
2007-11-27 8:59 ` Shaohua Li
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