[linux-dvb] af9005/mt2060 module unload failure

Luca Olivetti luca at ventoso.org
Thu Jun 14 22:29:44 CEST 2007


En/na Trent Piepho ha escrit:
> On Thu, 14 Jun 2007, Luca Olivetti wrote:
>> En/na Michael Krufky ha escrit:
>>>> Why dont you just use dvb_frontend_detach?
>>>>
>>> I retract that comment...
>>>
>>> The dvb-usb framework does this itself inside dvb-usb-dvb.c , inside
>>> dvb_usb_adapter_frontend_exit
>>>
>>> ... You should not have to do the symbol_put inside af9005-fe.c
>>>   If you remove that code, does it fix the issue?
>> Well, I'm doing the attach myself to attach the tuner to the frontend
>> the first time it is opened, so if I remove the code there will be at
>> least one reference to the mt2060 (or qt1010, depending on the model) so
>> it cannot be unloaded.
> 
> The tuner gets attached once when you call dvb_attach() from
> af9005_fe_init.  It will get detached once when dvb_frontend_detach() is
> called.  Everything balanced.

but dvb_frontent_detach doesnt' know anynthing about the tuner (since 
it's in the frontend private data), so if I don't do the put_symbol 
myself in af9005_fe_release (as I do the dvb_attach myself in 
af9005_fe_init) there will be a dangling reference count, yes?

Bye
-- 
Luca





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