[linux-dvb] af9005/mt2060 module unload failure

Michael Krufky mkrufky at linuxtv.org
Thu Jun 14 18:36:12 CEST 2007


Luca Olivetti wrote:
> En/na Olaf Titz ha escrit:
>> This sequence:
>>  modprobe dvb_usb_af9005
>>  sleep 60
>>  modprobe -r dvb_usb_af9005
>>
>> leaves the following residue:
>> Module                  Size  Used by
>> mt2060                  5572  4294967295
>> (the number is "unsigned int" for -1)
> 
> This is probably due to this code in af9005-fe.c:
> 
> static void af9005_fe_release(struct dvb_frontend *fe)
> {
>          struct af9005_fe_state *state =
>              (struct af9005_fe_state *)fe->demodulator_priv;
>          if (state->tuner != NULL && state->tuner->ops.tuner_ops.release 
> != NULL) {
>                  state->tuner->ops.tuner_ops.release(state->tuner);
> #ifdef CONFIG_DVB_CORE_ATTACH
>                  symbol_put_addr(state->tuner->ops.tuner_ops.release);
> #endif
>          }
>          kfree(state);
> }
> 
> specifically the symbol_put_addr, but this is the same thing I saw in 
> dvb_attach so I don't know why it doesn't work here (in fact I had no 
> such problem while testing, but some users reported it).
> 
>> Subsequent re-loading of the modules succeeds but then accessing the
>> tuner fails, likely due to this error.
> 
> it shouldn't matter.
> 
> Bye

Luca,

Why dont you just use dvb_frontend_detach?

-- 
Michael Krufky




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