http://bugzilla.kernel.org/show_bug.cgi?id=9528





------- Comment #34 from [EMAIL PROTECTED]  2007-12-23 04:26 -------
Increasing PCIBIOS_MIN_IO in include/asm-x86/pci.h to 0x142F fixes the problem.

It looks like there were some patches that touched this two years ago:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b2bfb4e7ff61f286676867c3508569bea6fbf7a

and

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b2bfb4e7ff61f286676867c3508569bea6fbf7a

Which were then both reverted:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2ba84684e8cf6f980e4e95a2300f53a505eb794e

And apparently never heard from since, so this IO ports limit has been stuck at
0x1000 (and all the other IO port writes in _PTS() are to ports lower than
0x1000, hence they don't break).

Perhaps 0x4000 for PCIBIOS_MIN_IO is a bit excessive - but certainly for this
nForce board, 0x142F (or, I suppose, we could pick 0x1500 as a nice round
number) will also fix the problem.


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