Re: pctv452e

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On 07/03/2012 10:46 AM, Marx wrote:
On 02.07.2012 18:33, Steve Hill wrote:
Can anyone give me any pointers that might help? I've searched and
searched and all I can see if people saying that it won't work since the
DVB-S2 code was integrated into the kernel tree, but I've not seen
anyone try to figure out _why_ it won't work.

I'm on the same boat.
I have 3 DVB-S2 cards, one of them is pctv452e, and none of them works
reliable. Yes, it's very frustrating that card which claims linux
support has this support broken. The problem is that community which
uses DVB cards is much smaller then those using other equipment. So
there are no test of every device in each kernel release.
I'm reading this list for some time and often see patches which refactor
some drivers, but the only check is compilation check.
"totally rewritten DVB-USB-framework" will not help to have more drivers
too. Makers of dvb cards often don't provide linux driver, or provide
only once in form of patches. You will not apply such patch into new DVB
stack. Makers must constantly refactor their drivers to suit new
kernels, and there are only a few which do this. I don't know why they
simply don't join this list and push drivers into kernel and then
provide support.
I don't know what's future of DVB stack, but I see that changes in DVB
stack causes meany problems with drivers. Often driver is written once
and later unsupported - changes make it non-functional and there is
nobody who can fix it. Exactly like with pctv452e driver.

Your claims about my DVB-USB-framework work is quite bullshit. I am not going to convert all drivers to the new framework just doing compile tests. I am heavily aware it is too risky thus I implemented it as a alternative, converting drivers one by one when you have hardware in hands to test. If such big changes were made to the existing code surely there is breakages.

And it fixes some existing DVB-USB bugs, actually all I was aware. Also it removes all the hacks, and also bugs coming those hacks, from many drivers. Most notable complex AF9015 and AF9035. See AF9015 before change and after change - code size is reduced something like 25% and binary size too.

Marx

Ps. Steve, could you please give me full version of kernel which works
with pctv452e?

As the new DVB-USB fixes many bugs I ask you to test it. I converted pctv452e driver for you:
http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/pctv452e

Only PCTV device supported currently, not TechnoTrend at that time.


regards
Antti

--
http://palosaari.fi/


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