powerpc/smp: Document irq enable/disable after migrating IRQs
authorMichael Ellerman <mpe@ellerman.id.au>
Wed, 15 Feb 2017 09:49:54 +0000 (20:49 +1100)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 3 May 2017 04:45:38 +0000 (14:45 +1000)
commit687b8f24f14db842c8c3f8cb8b24c9a29b691db8
treeaca41a72d7a58354fde7f2bd0dc24f0231fdf44b
parent0cc68bfad45b47167c9d99cf560b505983ebd012
powerpc/smp: Document irq enable/disable after migrating IRQs

This code was until recently completely undocumented and even now the comment is
not very verbose.

We've already had one patch sent to remove the IRQ enable/disable because it's
"paradoxical and unnecessary". So document it thoroughly to save anyone else
from puzzling over it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/smp.c