[linux-dvb] Re: Demux stops to work when tuning too many time

["Valsecchi Patrick" <patrick.valsecchi@nagra.com>]

Hello,

> Can you recover by reloading the drivers, including saa7146?
> If that doesn't work, can you try to enable the (commented out)
> master rest in saa7146_core.c?
> (saa7146_write(dev, MC1, MASK_31); in saa7146_init_one())

A restart of the drivers was not working, so I tried to 
un-comment that piece of code. It worked, but I got three
problems:

1) Once, during a driver restart, the whole machine froze while
loading the drivers.

2) I automated that in my application, but I didn't put any sleep
between the restart of the drivers and the re-opening of the
frontend. That resulted in a kernel oops and my application ended
up frozen. I solved that by putting a sleep in between. I guess
there is some times after the start of the driver where it's not
good to try open the frontend.

3) When I reload the drivers, the DVB cards (I have two) don't
keep the same adapater id. But that's not a big deal...

Anyway, thanks for the trick. It does the job  :-)

Have a nice day.