I have tried several times to build a 2.6.27 kernel using different configurations of Buildroot 2.2.1.
Most makes seem to get tripped up with patches and trying to apply them more than once.
Apart from that, making only slight modifications to the atngw100_defconfig options and then choosing a 2.6.27 kernel does complete the build process successfully.
The problem is these 2.6.27 kernels I've built don't boot.
The first one dies when trying to load the root file system. VFS gets tripped and the boot hangs.
The second one got a bad magic number straight after uBoot.
When I fall back to one of my 2.6.25 custom kernels, all is well.
Should I move to using Buildroot 2.2.2? Or is there something I can do with 2.2.1 to get a 2.6.27 kernel working.
(I want a 2.6.27 kernel to use gpio-sys)