Re: [PATCH] MIPS: VZ: Only include loongson_regs.h for CPU_LOONGSON64

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On Mon, 10 Aug 2020, Thomas Bogendoerfer wrote:

> > > It's not just this #include, there's a couple dozen mach-* directories;
> > > changing how they work would be up to the MIPS maintainers (CCed), and
> > > it would certainly not be a patch that can be merged in stable@ kernels.
> > > 
> > > arch/mips/kernel/cpu-probe.c has the same
> > > 
> > > #ifdef CONFIG_CPU_LOONGSON64
> > > #include <loongson_regs.h>
> > > 
> > > for example, so apparently they're good with this.  So if I don't pick
> > > up the patch to fix the build it would be in all likelihood merged by
> > > MIPS maintainers.  The only difference will be how long the build
> > > remains broken and the fact that they need to worry about KVM despite
> > > the presence of a specific maintainer.
> > 
> > Ok, fair enough, but in the long-run, this should probably be fixed up
> > "properly" if this arch is still being maintained.
> 
> I have it on my todo list. My plan is to move stuff out of mach-* directories,
> which aren't needed there. This should solve issues like the one here.

 Correct, it looks like another maintainer's oversight.

 The asm/mach-<platform>/ directories are there for platform variants of 
generic stuff found in asm/mach-generic/.  So if something is not there in 
asm/mach-generic/, then it must not be in any other asm/mach-<plaftorm>/ 
subdirectory either.

 Regular platform headers need to go under asm/<plaftorm>/.  Compare 
asm/mach-dec/ vs asm/dec/, or asm/mach-sibyte/ vs asm/sibyte/, and so on.  
So this `loongson_regs.h' piece belongs to asm/loongson64/ rather than 
asm/mach-loongson64/.

  Maciej



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