[PATCH] ARM: Fix errata 751472 handling on Cortex-A9 r1p*

[Russell King - ARM Linux]

On Thu, Nov 15, 2012 at 08:31:33AM -0600, Rob Herring wrote:
> So we should make all these work-arounds depend on !MULTI_PLATFORM then.

No, because some of the work-arounds don't require setting bits in magic
registers.

Also realise this: we test for the revision of the CPU to which they're
applicable before attempting to set them.  If you have a work-around
enabled in the kernel, and it fails at boot, _that_ is an indicator not
that the kernel is doing something wrong, but that you need to ensure
that the work-around has been applied by the earlier stages.

It's not about "but platform X doesn't need it" - it's about platform X
not having the earlier stages updated to fix the errata.