Re: State of dylan branch in meta-ti

[Volker Vogelhuber <v.vogelhuber@digitalendoscopy.de>]

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On 25.10.2013 13:11, Dmytriyenko, Denys wrote:
>> On 25.10.2013 12:58, Dmytriyenko, Denys wrote:
>>> On 25.10.2013 12:30, Denys Dmytriyenko wrote:
>>>>>> On Fri, Oct 25, 2013 at 12:12:35PM +0200, Volker Vogelhuber wrote:
>>>>>>> I just checked out the dylan branch of the yocto core and the
>>>>>>> meta-ti repository.
>>>>>>> It seems like the state of the meta-ti branch is not yet consistent
>>>>>>> to work out of the box.
>>>>>>>
>>>>>>> I currently had to remove the update-modules part from the ti
>>>>>>> recipes and had to add
>>>>>>> RPROVIDES_${PN} += "kernel-module-dsplinkk" to the ti-dsplink.inc
>>>>>>>
>>>>>>> Did I miss something or the dylan branch just not yet in a consistent state?
>>>>>> It's in great shape - better than ever! What you don't mention is what
>>>>>> platform you are using. You do mention dsplink though, but that is long since
>>>>>> unsupported. As a matter of fact, most of the old DSP related recipes are not
>>>>>> supported [1]. The new replacements are not ready yet. Other than that, it
>>>>>> provides great BSP support for platforms listed in the conf/ directory.
>>>>>>
>>>>>> [1]http://git.yoctoproject.org/cgit/cgit.cgi/meta-ti/tree/recipes-ti/README?h=dylan
>>>>
>>>> Thanks for the link, actually I did not read that notice yet indeed.
>>>> I'm currently using a TAO-3530 board from technexion.
>>>> We used to work with the denzil branch for some time, but after 
>>>> updating to ubuntu
>>>> 13.10 there were a lot of errors that I tried to fix with the dylan 
>>>> branch. And indeed after
>>>> patching some small problems (next to the patches for the meta-ti 
>>>> branch), it does create
>>>> a rootfs image at least, but have to flash it and test if it has 
>>>> some additional problems.
>>>>
>>>> I only wonder why the problem with the kernel-module- package name 
>>>> does only occure with the
>>>> dsplink and not with the e.g. libgles modules as they seem to 
>>>> provide wrong package names as well.
>>>
>>>
>>> What do you mean by the wrong package name?
>> In the hello-mod_0.1bb script under meta-skeleton within the dylan 
>> branch of the yocto repository
>> there is the following notice:
>>
>> # Kernel module packages MUST begin with 'kernel-module-', otherwise
>> # multilib image generation can fail.
>> #
>> # The following line is only necessary if the recipe name does not begin
>> # with kernel-module-.
>> #
>> PKG_${PN} = "kernel-module-${PN}"
>>
>> I guess because there is a new bbclass within dylan called 
>> kernel-module-split.bbclass
>> that has the following lines adding dependencies automatically.
>>
>> ...
>>     if modules:
>>         metapkg = d.getVar('KERNEL_MODULES_META_PACKAGE', True)
>>         d.appendVar('RDEPENDS_' + metapkg, ' '+' '.join(modules))
>>
>> the do_split_packages method called before that code gets executed 
>> seems to automatcally create
>> a list with kernel modules that all start with kernel-module-%s. I 
>> did not check what modules this method recognized. Maybe dsplinkk.ko 
>> was the only one and that's why the other modules did not
>> cause an error. Actually I did not spent to much time digging into 
>> the reason for introducing this bbclass at all.
>>
>> So to answer your question, all the module recipes within the meta-ti 
>> repository don't seem to be named with a "kernel-module-" prefix, but 
>> only the dsplinkk.ko module result in an error.
>>
> Because they don't have to be called that. The only extra thing the 
> new class does is sets up the dependencies. So even when a custom 
> module name is used, it will work fine.

Well then I don't understand why compiling the dsplink module causes an 
error during creation of the
RootFS when not adding the RPROVIDES_${PN} += "kernel-module-dsplinkk" 
to ti-dsplink.inc

Error log follows:

  Some packages could not be installed. This may mean that you have
| requested an impossible situation or if you are using the unstable
| distribution that some required packages have not yet been created
| or been moved out of Incoming.
| The following information may help to resolve the situation:
|
| The following packages have unmet dependencies:
|  ti-dsplink : Depends: kernel-module-dsplinkk but it is not installable
| E: Unable to correct problems, you have held broken packages.

Or is that error by design to avoid people using the dsplink module 
within dylan?
As mentioned, I did not test the resulting firmware image yet, so maybe 
there is indeed a problem with the modules, although I can't imagine why 
it shouldn't work as the used kernel is still the same.


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