ppc32 PIO recovery mecanism

[David Woodhouse]

On Mon, 2006-11-06 at 11:41 +1100, Benjamin Herrenschmidt wrote:
> On 32 bits powerpc, we currently have a mechanism where we try to
> recover from machine checks happening on PIO operations (inb/outb/....).
> This mecanisms has proven of dubious reliability in the past and it's my
> understanding that we've pretty fixed all relevant legacy drivers that
> distro typically load so that they don't muck around when they
> shouldn't.
> 
> I'm currently merging 32 and 64 bits io.h and I would really like to
> just get rid of that stuff, but I'd like your distro point of view
> first. Is this mechanism still useful at all or not ?

Yes, I think it's still useful because there are some drivers which
aren't update to use check_legacy_ioport() (or whatever other system)
yet.

Not many, mind you -- but I'd like to be 100% sure before we drop it.
Let's start by making it print with KERN_CRIT instead of KERN_DEBUG?

-- 
dwmw2