On Tuesday 27 December 2011 17:25:58 Момчил Иванов wrote:
> At Tue, 27 Dec 2011 16:51:46 +0100,
> 
> Hans Petter Selasky wrote:
> > On Tuesday 27 December 2011 16:48:48 Момчил Иванов wrote:
> > > At Tue, 27 Dec 2011 16:28:49 +0100,
> > > 
> > > Hans Petter Selasky wrote:
> > > > On Tuesday 27 December 2011 16:21:35 Момчил Иванов wrote:
> > > > > 16:13:27.509643 usbus6.2
> > > > > DONE-BULK-EP=00000081,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=
> > > > 
> > > > Hi,
> > > > 
> > > > The timeout error means the USB host is not getting the expected
> > > > data.
> > > > 
> > > > To figure out who is guilty not transferring or receiving the data
> > > > you need to have an USB analyzer, like the Beagle 480 (Runs under
> > > > Linux).
> > > > 
> > > > Else also see the quirks in:
> > > > 
> > > > sysctl -a hw.usb.ehci
> > > 
> > > sysctl: unknown oid 'hw.usb.ehci'
> > > 
> > > btw I don't seem to have any hw.usb.ehci sysctl... This is all that
> > > there is under hw.usb:
> > > 
> > > hw.usb.no_boot_wait: 0
> > > hw.usb.debug: 0
> > > hw.usb.usb_lang_mask: 255
> > > hw.usb.usb_lang_id: 9
> > > hw.usb.template: 0
> > > hw.usb.power_timeout: 30
> > > hw.usb.no_pf: 0
> > > hw.usb.no_cs_fail: 0
> > > 
> > > Since I don't have this kind of equiptment, I will not be able to do
> > > anything more. Is there some way I can set that timeout to something
> > > like 1-2 seconds?
> > 
> > sysctl hw.usb.ehci
> > hw.usb.ehci.lostintrbug: 0
> > hw.usb.ehci.iaadbug: 0
> > hw.usb.ehci.no_hs: 0
> > hw.usb.ehci.debug: 0
> > 
> > I think you need to build a kernel with "options USB_DEBUG" before the
> > lostintrbug will be available! I suspect setting this parameter will
> > solve your problem!
> 
> I've just rebuilt the kernel with "options USB_DEBUG" and rebooted without
> setting the cache quirk but with "hw.usb.ehci.lostintrbug=1" and rtorrent
> just hashed more than 4 GB without any stalls. So that seems to fix the
> issue. Man EHCI(4) needs to fixed since it does not mention anything about
> that kernel option, should I file a pr?
> 
> Thank you for your time.

Yes, please do!

--HPS
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