Date: Sat, 10 Dec 2005 10:35:38 +0000
From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Jason Dravet <dravet@hotmail.com>, linux-kernel@vger.kernel.org
Subject: Re: wrong number of serial port detected
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	Jason Dravet <dravet@hotmail.com>, linux-kernel@vger.kernel.org
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On Fri, Dec 09, 2005 at 12:54:44PM -0700, Bjorn Helgaas wrote:
> On Friday 09 December 2005 7:37 am, Jason Dravet wrote:
> > The question I have 
> > is with all of this plug and play stuff in our PCs shouldn't it be possible 
> > to get the correct number of ports, ask the bios or the pci bus or 
> > something?
> 
> Yes.  ACPI (or even PNPBIOS) should tell us about all the "legacy"
> ports, and PCI or other bus enumeration should tell us about all the
> rest.

Unless I stick a serial card into an industrial PC.  And yes, ISA
serial cards are still sold:

http://www.amplicon.co.uk/dr-prod3.cfm/groupId/10740/secid/10177.htm

ISA serial cards will not show up in ACPI, PNPBIOS or any other bus
enumeration scheme.  The only way to use them is via setserial.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core
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