linux-kernel - Re: [BUG] Loading both ehci-hcd and uhci-hcd drivers causes my printer to fail

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Date:	Mon, 09 Mar 2009 21:51:41 +0200
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Greg KH <greg@...ah.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [BUG] Loading both ehci-hcd and uhci-hcd drivers causes my
 printer to fail

On Mon, 2009-03-09 at 15:12 -0400, Alan Stern wrote:
> On Mon, 9 Mar 2009, Maxim Levitsky wrote:
> 
> > T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  7 Spd=480 MxCh= 0
> > D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> > P:  Vendor=03f0 ProdID=4117 Rev= 1.00
> > S:  Manufacturer=Hewlett-Packard
> > S:  Product=HP LaserJet 1018
> > S:  SerialNumber=KP06J6V
> > C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 98mA
> > I:* If#= 0 Alt= 0 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=(none)
> > E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> > E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> > 
> > T:  Bus=02 Lev=01 Prnt=01 Port=03 Cnt=02 Dev#=  2 Spd=480 MxCh= 0
> > D:  Ver= 2.00 Cls=ef(unk. ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
> > P:  Vendor=064e ProdID=a101 Rev= 1.00
> > S:  Manufacturer=SuYin
> > S:  Product=Acer CrystalEye webcam
> > S:  SerialNumber=CN0314-OV03-VA-R02.00.00
> > C:* #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
> > A:  FirstIf#= 0 IfCount= 2 Cls=0e(video) Sub=03 Prot=00
> > I:* If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
> > E:  Ad=83(I) Atr=03(Int.) MxPS=  16 Ivl=4ms
> > I:* If#= 1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
> > I:  If#= 1 Alt= 1 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
> > E:  Ad=81(I) Atr=05(Isoc) MxPS= 128 Ivl=125us
> > I:  If#= 1 Alt= 2 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
> > E:  Ad=81(I) Atr=05(Isoc) MxPS= 256 Ivl=125us
> > I:  If#= 1 Alt= 3 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
> > E:  Ad=81(I) Atr=05(Isoc) MxPS= 800 Ivl=125us
> > I:  If#= 1 Alt= 4 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
> > E:  Ad=81(I) Atr=05(Isoc) MxPS=1600 Ivl=125us
> > I:  If#= 1 Alt= 5 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
> > E:  Ad=81(I) Atr=05(Isoc) MxPS=2400 Ivl=125us
> > I:  If#= 1 Alt= 6 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
> > E:  Ad=81(I) Atr=05(Isoc) MxPS=3000 Ivl=125us
> 
> I wonder...  Does it make any difference if you unplug that webcam, or 
> plug it into the other high-speed bus?
Can't do so, its built-in.


Best regards,
	Maxim Levitsky

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