On 25.06.2014 15:50, Russell King - ARM Linux wrote:

On Wed, Jun 25, 2014 at 03:37:25PM +0200, Tomasz Figa wrote:

quoted

This series intends to add support for L2 cache on Exynos4 SoCs on boards
running under secure firmware, which requires certain initialization steps
to be done with help of firmware, as selected registers are writable only
from secure mode.

What I said in my message on June 12th applies to this series.  I'm
not having the virtual address exposed via the write_sec call.

Yes, you need to read other registers in order to use your secure
firmware implementation.  Let's fix that by providing a better write_sec
interface so you don't have to read back these registers, rather than
working around this short-coming.

Do you have anything in particular in mind? I would be glad to implement
it and send patches.

That's exactly what I meant when I talked on June 12th about turning
cache-l2x0.c back into a pile of crap.  You're working around problems
rather than fixing the underlying issue, as seems to be standard
platform maintainer behaviour when things like core ARM code is
concerned.  This is why things devolve over time into piles of crap,
because platforms just hack around problems rather than fixing the
root cause of the problem.

I'm not sure what part of my patches exactly is turning cache-l2x0.c
into a pile of crap. On the contrary, I believe that working around the
firmware brokenness on platform level, while keeping the core code
simple does the opposite.

However, I'll be happy to rework my series if you have some more
specific suggestions.

So... I'm NAKing the entire series.

Your opinion is always appreciated, thanks.

Best regards,
Tomasz