linux-kernel - Re: Why no USB id list in the kernel sources?

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Message-ID: <51D7A057.8090504@free-electrons.com>
Date:	Sat, 06 Jul 2013 06:43:03 +0200
From:	Michael Opdenacker <michael.opdenacker@...e-electrons.com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	linux-usb@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Why no USB id list in the kernel sources?

Hi Greg,

On 07/05/2013 11:43 PM, Greg KH wrote:
> On Fri, Jul 05, 2013 at 11:34:05PM +0200, Michael Opdenacker wrote:
>> Hi,
>>
>> I'm wondering why there is no include/linux/usb_ids.h (or
>> include/linux/usb/ids.h) file in the same way there is a
>> include/linux/pci_ids.h for PCI.
> Because that way lies madness, we have learned from our mistakes and do
> not want to repeat them again :)
>
> It turns out that the pci_ids file isn't a good idea, it's a merge mess,
> and only really works when you have ids that are shared across different
> drivers.  In the end, that is a very small number, and it's just not
> worth the time and effort to do this in a centralized way.
>
> Hope this helps explain things, if you want more details, dig into the
> linux usb mailing list about 10-15 years ago when this decision was
> made.

I understand better now, thanks. It's true that the added value would
have been relatively small anyway.

Thanks for your time!

Cheers,

Michael.
>
> thanks,
>
> greg k-h


-- 
Michael Opdenacker, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
+33 484 258 098

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