[linux-dvb] Re: FE_GET_EVENT to clear frontend event queue: onlyfor QPSK?

[Holger Waechtler <holger@qanu.de>]

Nico Sabbi wrote:

> Hi,
> of the current ?zap applications only szap uses FE_GET_EVENT to clear 
> the event queue before tuning;
> tzap and czap don't.

we discourage using GET_EVENT at all, this ioctl will vanish in future 
API versions. Please use poll()/READ_STATUS directly instead and handle 
ioctl error codes properly. GET_EVENT delivers pasttime events, they are 
probably not what you are expecting.

> Is there a particular reason for this? Clearing an event queue seems 
> to be a reasonably common
> thing to do.
>
> Besides, some user reported in mplayer-dvb ML that this particular 
> ioctl() seems to block tuning
> when used in some usb -t frontends, even though the frontend is opened 
> in non blocking mode.

Are they using a recent driver version? This should have been fixed a 
while ago.

Holger