i386/105616: UART PCI device just silent...
Marcel Moolenaar
xcllnt at mac.com
Sun Nov 26 21:00:35 PST 2006
The following reply was made to PR i386/105616; it has been noted by GNATS.
From: Marcel Moolenaar <xcllnt at mac.com>
To: Helge Oldach <puc-uart at oldach.net>
Cc: FreeBSD-gnats-submit at FreeBSD.org
Subject: Re: i386/105616: UART PCI device just silent...
Date: Sun, 26 Nov 2006 20:55:18 -0800
On Nov 26, 2006, at 3:00 PM, Helge Oldach wrote:
>> One thing that strikes me as odd is that sio(4) attaches to acpi(4),
>> while uart(4) attaches to isa(4).
>
> Yes. That is indeed the reason why I send you this. But maybe it's
> just
> harmless.
The reason is that acpi is loaded as a module, when uart is not. The
acpi
bus attachment is not being included in the uart driver because you
don't
build the acpi driver. It's not necessarily a problem if you have the
right
hints, but it's better to add device acpi to your kernel config file or
otherwise use the uart module. The reason sio attaches to acpi is
that sio
is broken in that respect. While it comes in handy sometimes, it's
still a
bug.
Why do you have PUC_FASTINTR for sio, but not for uart?
--
Marcel Moolenaar
xcllnt at mac.com
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