Re: Problems with reading ROMs in Kernel sysfs PCI

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Grant Grundler escribio':
On Sat, Dec 06, 2008 at 01:06:12PM +1100, Timothy S. Nelson wrote:
Hi all. We're having problems reading ROMs via the sysfs PCI interface. This means that people who use the Xorg project and have a second video card are unable to use it (and may be causing other problems as well). The Xorg people did some tracking down, and submitted a kernel bug:

http://bugzilla.kernel.org/show_bug.cgi?id=12168

One of the kernel guys said that this mailing list was the appropriate discussion forum; if you could have a look over the bug (above), that would be much appreciated.

I've updated the bug. The example given in the bug is inability to read
SATA Expansion ROM. This is very different from not being able to read
the Expansion ROM from a second VGA card as stated above.

hth,
grant
I am the one who created the bug.

I have updated the bug with information from my home machine where the bug also happens. In my home machine, both ROMs involved are from video chipsets. One is an integrated AGP chipset, and the other is a plugged-in PCI card. I have also created two patches to better diagnose (but not yet fix) the ROM problem.

The SATA ROM example is from my work machine, where the SATA hard disk is already a boot device. Why is this not a proper example of the PCI ROM reading failure?

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