[linux-dvb] Re: [fwd] dvb portability issues

[Michael Hunold <hunold@convergence.de>]

Hello Gerd, Andrew,

> The current dvb code has some portability problems, see the ppc64
> build log below.
The portability problems are mostly in the saa7146 core and in the 
recently changed drivers like the ves1820.

Please note that the old, monolithic av7110 driver (with the saa7146 
driver included) has been used on ppc succesfully and that the dvb core 
is used on ppc set-top-boxes as well.

The saa7146 driver is not needed for our set-top-box developments any more.

I must admit that I broke the saa7146 stuff when I ported the av7110 
driver to my new saa7146 driver core. I'll have a look at it.

> The virt_to_bus() is a big no-no, this isn't portable, the drivers
> should use the dma mapping interface (Documentation/DMA-mapping.txt)
> instead.
I know and most of the time I use the dma interface (for example through 
the video-buf module) already. I have to port the necessary stuff from 
the old av7110 driver to my new saa7146 core. Thanks for the hint.

> Some of the failures look harmless, just a missing include
> (vmalloc_to_page) or due to recent irq API changes (request_irq
> warning).
All other fixes to the frontend drivers have already been done. Because 
of the fact that there is a huge pile of dvb-patches already pending 
again (and that Christoph Hellwig has asked me to stop sending patches 
unless he has fixed the devfs layer completely), I'll probably take some 
weeks until I'll send the next major patchset again.

CU
Michael.




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