[linux-dvb] af9005/mt2060 module unload failure

Luca Olivetti luca at ventoso.org
Thu Jun 14 18:33:10 CEST 2007


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



More information about the linux-dvb mailing list