Re: rc5 seemed to kill a disk that rc4-mm1 likes. Also some X trouble.

[Rolf Eike Beer <eike-kernel@sf-tec.de>]

Linus Torvalds wrote:
>On Mon, 22 Aug 2005, Rolf Eike Beer wrote:
>> >It's a PII-350 with more or less SuSE 9.3. The machine has no net access,
>> > so I can only try to narrow it down to one rc at the weekend.
>>
>> 2.6.12 works fine, everything since 2.6.13-rc1 breaks it.
>
>Gaah. I don't see anything really obvious in that range. However, I notice
>that pci_mmap_resource() (in drivers/pci/pci-sysfs.c) now has
>
>+       if (i >= PCI_ROM_RESOURCE)
>+               return -ENODEV;
>
>which seems a big bogus. Why wouldn't we allow the ROM resource to be
>mapped? I could imagine that the X server would very much like to mmap it,
>although I don't know if modern X actually does that. The fact that it
>works when root runs the X server and causes problems for normal users
>does seem like there's something that root can do that users can't do, and
>doing a mmap() on /dev/mem might be just that.
>
>Eike, maybe you could change the ">=" to just ">" instead?
>
>PS. The patch that introduced this was billed as "no change for anything
>but ppc". Tssk.

This does not fix the problem. I'll narrow it down to one git snapshot next 
weekend (forgot the tarball on friday).

Eike

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