[linux-dvb] Re: DVB-USB-T and 2.6

[Andrew de Quincey <adq_dvb@lidskialf.net>]

On Wednesday 10 March 2004 13:04, Andrew de Quincey wrote:
> On Wednesday 10 March 2004 12:07, Andrew de Quincey wrote:
> > Hi, I've just tried my USB DVB-T device under kernel 2.6.. no go; it just
> > seems to hang when I insert the dvb-ttusb-budget module.
> >
> > I've tried 2.6.0 -> 2.6.3. Oh, and this is with the latest dvb-kernel
> > from CVS (making sure DVB is NOT enabled in the kernel itself).
> >
> > I see there are some 2.6 fixes in there, so I assume those were for a
> > -pre version of 2.6... does anyone know which?
>
> Ah, I think I've found it.... ttusb_probe() calls usb_set_configuration().
>
> In the source for usb_set_configuration(), it says specifically:
> " * This call is synchronous. The calling context must be able to sleep,
>  * and must not hold the driver model lock for USB; usb device driver
>  * probe() methods may not use this routine."
>
> Sounds like the device init needs rearranged... maybe move the actual
> device initialisation to the first stc_open() call. Can anyone with more
> USB experience confirm this?

Actually, that stc_open() thing is bogus, sorry. Is there a nicer way to do 
this than just putting a check in all the externally called functions?


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