Re: 2.6.20-rc4: usb somehow broken

From: Oliver Neukum
Date: Thu Jan 11 2007 - 12:28:24 EST


Am Donnerstag, 11. Januar 2007 18:20 schrieb Prakash Punnoor:
> Hi,
>
> I can't scan anymore. :-( I don't know which rc kernel introduced it, but this
> are the messages I get (w/o touching the device/usb cable except pluggin it
> in for the first time):
>
> usb 1-1.2: new full speed USB device using ehci_hcd and address 4
> ehci_hcd 0000:00:0b.1: qh ffff81007bc6c280 (#00) state 4
> usb 1-1.2: configuration #1 chosen from 1 choice
> usb 1-1.2: USB disconnect, address 4
> usb 1-1.2: new full speed USB device using ehci_hcd and address 5
> usb 1-1.2: configuration #1 chosen from 1 choice
> usb 1-1.2: USB disconnect, address 5
> usb 1-1.2: new full speed USB device using ehci_hcd and address 6
> usb 1-1.2: configuration #1 chosen from 1 choice
> usb 1-1.2: USB disconnect, address 6
> usb 1-1.2: new full speed USB device using ehci_hcd and address 7
> usb 1-1.2: configuration #1 chosen from 1 choice
> usb 1-1.2: USB disconnect, address 7
> usb 1-1.2: new full speed USB device using ehci_hcd and address 8
> usb 1-1.2: configuration #1 chosen from 1 choice
>
>
> Shouldn't the ohci module handle the scanner? The scanner is connected through
> a hub.

Therefore it goes to EHCI. Can you try a direct connection?

> I don't remember how 2.6.19 handled it, or whether I used some new exotic
> setting which causes the breakage.

Could you try 2.6.19?

> Well, I'll test this week-end and upload more infos then. If you already have
> some ideas in the meantime, let me know.

Please test with CONFIG_USB_DEBUG

Regards
Oliver
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