[PATCH] powerpc/40x: Fix assembler warning about r0

[Michael Ellerman]

Christophe Leroy <christophe.leroy at csgroup.eu> writes:
> Le 22/07/2020 à 04:24, Michael Ellerman a écrit :
>> The assembler says:
>>    arch/powerpc/kernel/head_40x.S:623: Warning: invalid register expression
>
> I get exactly the same with head_32.S, for the exact same reason.

Ah yep, I see it. I mostly build pmac32_defconfig which doesn't have
BDI_SWITCH enabled.

Send a patch? :)

Do we still need the BDI_SWITCH code? Is it likely anyone still has one,
that works?

cheers