Re: [patch]addition of blacklist for whole device quirks

Alan Stern <[email protected]>
Newsgroups gmane.linux.usb.devel
Message-ID <[email protected]>
On Sun, 28 Jan 2007, Prakash Punnoor wrote:

> Am Sonntag 28 Januar 2007 schrieb Oliver Neukum:
> > > So does this really point to broken hw or a broken patch? Where can I get
> > > that patch as standalone? So I could revert it in rc6 and test...
> >
> > ftp://ftp.de.kernel.org/pub/linux/kernel/people/gregkh/usb/2.6/2.6.19
> >
> > The patch might just make visible a hardware problem.
> 
> Another thing I noticed: The hub has two ports:

It actually has three ports.  The third port must be internal.

>  And only with one of the ports 
> I have the problem with the scanner. COuld this just be some timing problem? 
> Such as the kernel's usb subsystem tries to access the hub before it is fully 
> wake? Perhpas the old code delayed the access enough?

The delays have not changed.

The fact that one port works while another port doesn't tends to indicate 
a hardware problem in one of the ports.

Alan Stern


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