linux-kernel - Re: [PATCH] USBHID: Make Boot Protocol drivers depend on EMBEDDED

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Date:	Mon, 22 Dec 2008 00:17:38 +0200
From:	Anssi Hannula <anssi.hannula@...il.com>
To:	Parag Warudkar <parag.lkml@...il.com>
CC:	Jiri Kosina <jkosina@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-input@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: [PATCH] USBHID: Make Boot Protocol drivers depend on EMBEDDED

Parag Warudkar wrote:
> 
> On Sun, 21 Dec 2008, Jiri Kosina wrote:
> 
>> On Sun, 21 Dec 2008, Andrew Morton wrote:
>>
>>>> So do I get it right that the only reason of the problem you were 
>>>> seeing was that in the 2.6.27 kernel you have compiled usbhid module, 
>>>> which was then used for driving your mouse,but in 2.6.28-rcX you 
>>>> compiled and used 'usbmouse' instead, and therefore this is not a 
>>>> regression?
>>> Shouldn't usbmouse support two-dimensional mice as well?
>> Yup, but that's a separate issue on my TODO. I first want to know whether 
>> this is a regression or not.
>>
> 
> I have always compiled usbmouse as a module - the problem or regression 
> here was that it was loaded instead of usbhid when both were compiled as 
> modules - but I don't think this is a kernel regression, here is why -
> 
> The problem happened with Fedora 10 - when I booted into Ubuntu 8.10 with 
> the same kernel compiled with same config, usbhid was correctly loaded and 
> mouse worked. So I would forget this as a Fedora specific issue.

It may well be that Ubuntu has usbmouse blacklisted or employs udev
rules that force usbhid to be loaded before usbmouse.

On Mandriva it was handled in a similar way, before usbmouse was
disabled from the kernel (no reason to have it in a "normal" kernel).

> Thanks for the pointers.

-- 
Anssi Hannula
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