Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops

On Mon 2007-12-17 00:03:01, Alan Cox wrote:
On Sun, 16 Dec 2007 22:26:33 +0100
Pavel Machek <pavel@xxxxxx> wrote:

On Fri 2007-12-14 15:33:28, Ingo Molnar wrote:

* Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:

There is another reason we can't just do a dumb changeover - two
actually

#1: Some drivers are using inb_p/outb_p in PCI cases which are going
#to cause PCI posting changes. Most are probably just wrong in the
#first place but they need hand checking

hm, any intelligent way to force PCI posting? I guess not.

here's a list of candidate drivers (match the out*_p() pattern and do
pci)

./char/epca.c
./char/sonypi.c
./scsi/megaraid.c
./ide/pci/serverworks.c
./ide/pci/cmd640.c
./input/mouse/pc110pad.c

You are missing some watchdogs at least ?

I snipped them, I only wanted to comment that pc110pad.c looks like
legitimate use of outb_p().
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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