Re: USB deadlock after resume

[Oliver Neukum]

Am Mittwoch 21 November 2007 schrieb Felipe Balbi:
> Hi,
> 
> On Wed, 21 Nov 2007 15:37:20 +0100, "Markus Rechberger"
> <mrechberger@xxxxxxxxx> wrote:

> > it's the usb_control_message which calls usb_kill_urb if I haven't got
> > it wrong. (if you're looking for some other information please let me
> > know)
> > Although, I got a bit further with it. The error seems to happen
> > earlier already.
> > If I load the driver, and do not access the device after suspending
> > all usb_control commands fail with -71 eproto.
> 
> This device shouldn't be suspended. AFAIK it should have auto_suspend
> disabled
> by default.
> 
> Try adding this device to drivers/usb/core/quirks.c with
> USB_QUIRK_NO_AUTOSUSPEND flag set. Something like:

Unless the device sets a flag it won't be autosuspended. Nevertheless
it will and must be suspended as the whole system is supended.

	Regards
		Oliver
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/