[linux-dvb] Re: linux-dvb Re Nova-s CAMCI support

[Andrew de Quincey <adq_dvb@lidskialf.net>]

> I don't know what DA IRQ:s are :( but now there is a wakeup logged for
> both IRQ:s.

DA => CAM has Data Available for the host to read.

> I had to move the logging to a 75 GB partition because this thing eats
> diskspace like crazy. ;-)
>

The CAM protocol isn't the most efficient protocol existing :)

> May 13 15:00:58 htpc kernel: dvb_ca_en50221_io_write
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_write_data
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_io_poll
> May 13 15:00:58 htpc kernel: FR/DA IRQ slot:0
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_thread_wakeup
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_read_data
> May 13 15:00:58 htpc kernel: FR/DA IRQ slot:0
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_thread_wakeup
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_read_data
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_read_data
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_io_poll
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_io_read
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_io_do_ioctl
> May 13 15:00:58 htpc kernel: dvb_ca_en50221_slot_shutdown

As you say, thats looking better now. But you're still getting the read failed 
problem I see :(

The constant writing is the higher level CI library polling the CAM for data. 
Normally the CAM replies saying theres nothing for it. The double read must 
be when the CAM replies with some data for the application.

I'll have another look at the code later today. 


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