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Date:      Wed, 10 Nov 2010 07:09:10 -0800
From:      Marcel Moolenaar <xcllnt@mac.com>
To:        Garrett Cooper <gcooper@freebsd.org>
Cc:        hackers@freebsd.org
Subject:   Re: [PATCH] Simplify uart_bus_pci_probe
Message-ID:  <899E1FB8-C763-4DBC-90FB-83D0725F757A@mac.com>
In-Reply-To: <AANLkTimtEVSAYOnw3OonJR3tmYpKmiw0Wsby-OcPQvgJ@mail.gmail.com>
References:  <AANLkTimMt4Ucm%2BfRipzk3sq0M=1DNaC6EGQJ8M0ZWwob@mail.gmail.com> <478E6244-00B4-4D96-93FE-CBD546C27A6E@mac.com> <AANLkTimtEVSAYOnw3OonJR3tmYpKmiw0Wsby-OcPQvgJ@mail.gmail.com>

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On Nov 10, 2010, at 12:44 AM, Garrett Cooper wrote:

> On Tue, Nov 9, 2010 at 10:29 PM, Marcel Moolenaar <xcllnt@mac.com> wrote:
>> 
>> On Nov 6, 2010, at 11:22 AM, Garrett Cooper wrote:
>> 
>>>    Some of the logic could have been simplified in the probe. The
>>> proposed patch makes the detection process a tad bit more
>>> straightforward.
>>>    Comments, review (and maybe a commit :P) are more than welcome :).
>> 
>> The patch is logically wrong for non-ns8250 based UARTs.
>> Leave the code as is.
> 
> Hi Marcel,
>    Is the layout of the pci_ns8250_ids PCI ID table correct then, as
> there are a large number of ns16550 chips and other non-ns8250 chips
> in the table?

ns16550 is a ns8250 class UART. They are in the same family. Non-ns8250
UARTs include Zilog Z8530, Siemens SAB 82532, Freescale's PowerQUICC
SCC, and even SGI's firmware based serial console of you like.

FYI,

-- 
Marcel Moolenaar
xcllnt@mac.com






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