[Letux-kernel] LetuxOS: kernel: letux-5.5-rc1

[H. Nikolaus Schaller]

> Am 11.12.2019 um 17:03 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
> 
> 
>> Am 10.12.2019 um 22:05 schrieb Andreas Kemnade <andreas at kemnade.info>:
>> 
>> On Tue, 10 Dec 2019 21:51:52 +0100
>> "H. Nikolaus Schaller" <hns at goldelico.com> wrote:
>> 
>>>> Am 10.12.2019 um 20:57 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>> 
>>>> 
>>>>> Am 10.12.2019 um 19:01 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>>> 
>>>>> Next, I'll try to build with your defconfig.  
>>> 
>>> I have simply copied it to arch/arm/configs/letux_defconfig. Then it will
>>> be taken by my scripts.
>>> 
>>>> 
>>>> Hm:
>>>> 
>>>> LD [M]  lib/crypto/libdes.o - due to: lib/crypto/des.o
>>>> Building modules, stage 2.
>>>> MODPOST 436 modules - due to target is PHONY
>>>> ERROR: "input_unregister_polled_device" [drivers/iio/industrialio.ko] undefined!
>>>> ERROR: "input_register_polled_device" [drivers/iio/industrialio.ko] undefined!
>>>> ERROR: "devm_input_allocate_polled_device" [drivers/iio/industrialio.ko] undefined!
>>>> make[3]: *** [__modpost] Error 1
>>>> make[2]: *** [modules] Error 2
>>>> make[1]: *** [__build_one_by_one] Error 2
>>>> make: *** [sub-make] Error 2
>>>> 
>>>> $head->scratch()  
>>> 
>>> Ok, I have disabled the IIO_INPUT_BRIDGE.
>>> 
>>> Now I can compile
>>> ...
>>> ...
>>> ...
>>> and it boots. Also without display. There is no td028ttec1 panel driver in
>>> modprobe -c. Indeed, CONFIG_DRM_PANEL_TPO_TD028TTEC1=m is not in your config.
>>> CONFIG_DRM_OMAP_PANEL_TPO_TD028TTEC1=m is but that does no longer exist in
>>> v5.5-rc1.
>>> 
>> well, no need for that on the letux 3704.
> 
> Indeed... I think the missing panel is a secondary bug.
> 
> I think I have boiled it down to
> 
> CONFIG_ARCH_BCM=y or n
> 
> (or one of the subconfigs enabled by that).
> 
> Will need a clean test though.

Well, unfortunately this is not sufficient alone.
Seems to need more than one config to be disabled :(

Unfortunately I have no good strategy to bisect this.

Maybe I could take the good letux_defconfig that I have
found, do a git reset and then by git add -p create
small chunks of changes. And then a git bisect on this
sequence?

BR,
Nikolaus