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List:       linux-usb-devel
Subject:    Re: [linux-usb-devel] Patch (2.4.6) for my Dimage Camera
From:       Olivier Chapuis <olivier.chapuis () free ! fr>
Date:       2004-06-17 9:26:33
Message-ID: 20040617092632.GA5286 () snoopy ! folie
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On Wed, Jun 16, 2004 at 01:41:49PM -0400, Alan Stern wrote:
> On Tue, 15 Jun 2004, Olivier Chapuis wrote:
> 
> > On Mon, Jun 14, 2004 at 11:25:43AM -0400, Alan Stern wrote:
> > > On Sat, 12 Jun 2004, Olivier Chapuis wrote:
> > > 
> > > > - I take a look to the 2.6 code (usb/core/config.c) and I do not
> > > > think that my camera will be recognized by a 2.6 kernel ... sorry
> > > > no patch.
> > > 
> > > I would be surprised if it didn't work.  Have you tried it?  What do you 
> > > think might be wrong with the code?
> > > 
> > 
> > I've not the time to install a 2.6 kernel, sorry. Any way I think it
> > will not work for exactly the same reasons than for the 2.4.26 kernel.
> > size will become negative in the find_next_descriptor function
> > (drivers/usb/core/config.c) going "out of descriptors parsing".
> 
> That can never happen in 2.6.  All the descriptors are checked in 
> usb_parse_configuration() before find_next_descriptor() is called.  If a 
> descriptor has bLength > size2 then that descriptor and everything 
> following are ignored.
> 

Yes, I miss this part of the code. Note that in 2.6.6 my camera
is not recognized (an error is generated when bLength > size2).
With the just released 2.6.7, everything seems fine (not tested).

Does someone care about the problem for the 2.4 branch?

Regards, Olivier
 


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