[linux-dvb] Re: [PATCH] stop fe thread without FE_SLEEP if shutdowntimeout is 0

[Holger Waechtler <holger@convergence.de>]

Hi Andreas,

Andreas Oberritter wrote:
> Hi.
> 
> When dvb_shutdown_timeout is 0, then the kernel fe thread is not
> stopped, when an application closes the frontend device. However, if the
> device is opened again, then the thread will be stopped and a new one
> will be created. So why not just skip FE_SLEEP and quit the thread
> immediately?

we could skip the FE_SLEEP call whenever the frontend is restarted. This 
would require an extra variable in the frontend struct.

> 
> I made this patch because killing my application made the kernel thread
> start zigzagging (and it never stopped), because it sent a diseqc
> standby command which somehow made the frontend lose lock (although i do
> not use diseqc devices except for the frontend itself). This patch
> unfortunatly does not prevent loss of lock in this case, but at least it
> stops zigzagging around. :)
> 
> Does this have any drawbacks?

I don't see any right now, just go on.

Holger



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