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ljalves / linux_media

TBS linux open source drivers
https://github.com/ljalves/linux_media/wiki
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Problem building drivers on recent kernel #165

Open dbrb2 opened 6 years ago

dbrb2 commented 6 years ago

Hi, I have a machine that was running 4.4 kernel, and is now running 4.13. Both experienced the problem below:

When trying to build the drievrs from source, all seems to be fine until: sudo modprobe saa716x_budget int_type=1 modprobe: FATAL: Module saa716x_budget not found in directory /lib/modules/4.13.5-041305-generic

I have both a dual DVB-T tuner and a DVB-S tuner:

02:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 02) 03:00.0 Multimedia controller: Philips Semiconductors SAA7160 (rev 03)

Any suggestions? Would reverting to a particular kernel version help...?

THN1 commented 6 years ago

Hi

I am running a TechniSat SkyStar 2 eXpress HD card with Philips Semiconductors SAA7160 (rev 03) chip.

It has compiled well with Luis' sources up to Kernel 4.10 including.

As of Kernel 4.11 and higher (eg Ubuntu 17.10) it seems you need to

Hope it helps.

T.

Zuikkis commented 6 years ago

The saa716x_budget driver is not build.

I can't figure out why. I see the source code there but no .o is generated. I see no errors, imho it doesn't even try to build it.

Zuikkis commented 6 years ago

saa716x_budget is not enabled in config.

Go to v4l directory, type "make config" and enable it. Then make and it does build it.

I first had to modify the Kconfig file slightly, "make config" complains about the "---help---" lines.. When replacing all of those with "help" it worked nicely.

manio commented 6 years ago

calls to function pci_enable_msix should be replaced by calls to pci_enable_msix_range

No, it has to be replaced with pci_enable_msix_exact() pci_enable_msix_range() is returning positive value when success, so it would not work in this case without source code adjustment.

btw: @crazycat69 has a proper patch for this: https://github.com/crazycat69/linux_media/commit/79e0a1c5121ad34186d3f21d151b128905721a89#diff-f5e77d09edeb6d8c2e8f266122302a2c

FWIW: I successfully compiled this ljalves drivers on kernel 4.16-rc2, but I stripped the modules only to support single card relevant for me (TBS 6982SE) and I've putted it in the kernel tree directly, not compiling out of tree. Works great! :)

THN1 commented 6 years ago

Hi Mariusz thanks a lot for the clarification and for the patch provided. Appreciated. Best regards