linux-kernel - Re: USB extension (repeater) cable

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Message-ID: <45B314B0.4020907@zytor.com>
Date:	Sat, 20 Jan 2007 23:22:24 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Udo van den Heuvel <udovdh@...all.nl>
CC:	linux-kernel@...r.kernel.org, Greg KH <greg@...ah.com>
Subject: Re: USB extension (repeater) cable

Udo van den Heuvel wrote:
> 
>> Actually, what it looks like is even simpler.  The extension cable
>> contains a four-port hub chip (which is the most common commodity chip)
>> and haven't bothered changing the descriptor to tell the computer only
>> one port is actually active.  So only one port can be activated, and the
>> others are stubbed out in some evil way.  In that case, it should be
>> noisy but harmless.
> 
> I will do some more testing then.
> Is there a way to get rid of the messages?

No, but you don't have to care about them.

	-hpa
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