[linux-dvb] tda10045 slower tuning with 2.6.10

[Hamish Moffatt <hamish@cloud.net.au>]

I've just upgraded to 2.6.10 (from .9); tuning on my technotrends
budget card (budget-ci/tda1004x) is now significantly slower than it was
previously.

using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
tuning to 191625000 Hz
video pid 0x0207, audio pid 0x02d0
status 00 | signal cbcb | snr dbdb | ber 0001fffe | unc 00000000 |
status 0c | signal cbcb | snr 2727 | ber 00000000 | unc 00000000 |
status 00 | signal cbcb | snr 5050 | ber 00000000 | unc 00000000 |
status 00 | signal cbcb | snr c0c0 | ber 0001fffe | unc 00000000 |
status 0c | signal cbcb | snr 3d3d | ber 00000000 | unc 00000000 |
status 1f | signal cbcb | snr fefe | ber 0000008c | unc 00000000 | FE_HAS_LOCK
status 1f | signal caca | snr 0000 | ber 00000096 | unc 00000000 | FE_HAS_LOCK
status 1f | signal cbcb | snr 0000 | ber 00000086 | unc 00000000 | FE_HAS_LOCK
status 1f | signal cbcb | snr 0000 | ber 00000088 | unc 00000000 | FE_HAS_LOCK
status 1f | signal caca | snr 0000 | ber 0000008a | unc 00000000 | FE_HAS_LOCK

So it now takes about 5 seconds to lock. Previously it was about 2-3.
This happens with all our local channels. My A761 (sp887x) is
unaffected.

Here is a channels.conf entry showing an example channel:

Nine Digital:191625000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:519:720:1072

Some of our channels use different FEC settings. They are equally slow
to tune.

Suggestions?

thanks
Hamish
-- 
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>