[Bugme-new] [Bug 10667] New: Enable NVidia MSI-HT quirk for ALi bridges as well

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=10667

           Summary: Enable NVidia MSI-HT quirk for ALi bridges as well
           Product: Drivers
           Version: 2.5
     KernelVersion: 2.6.25.3
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: PCI
        AssignedTo: drivers_pci at kernel-bugs.osdl.org
        ReportedBy: fox.box at gmail.com


Latest working kernel version: 2.6.23
Earliest failing kernel version: 2.6.24
Distribution: Debian/Sid
Hardware Environment: AMD64, Board: ASRock ALiveDual-eSATA2 (nForce3 250Gb with
ALi M1695 Northbridge), RTL8111/8168B via PCI Express
Software Environment: 

Problem Description:
I found this problem because my internal RTL8111b network chip hasn't been
working anymore since 2.6.24. Then I found the bug report:
http://bugzilla.kernel.org/show_bug.cgi?id=10301 which exactly described my
problem as well, but was solved with commit
9dc625e72309e1c919ea3e7f51d0ffca96123787 since ~2.6.25rc3.

Unfortunately the problem persists for my setup. All reports about this issue
on various distribution bug trackers that were resolved by this commit
indicated that the reporters were running "pure" nVidia chipsets. My NIC is
connected through the PCI Express bus on an ALi Northbridge though, and
according to lspci  the MSI Mapping flag wasn't set as well.

So I tried enabling the quirk for ALi devices as well and it works fine.

The lspvi -vvvnn outputs of the patched and unpatched kernels + the tiny patch
are attached.

Steps to reproduce:
Just run a vanilla 2.6.24/25 on the board specified above (with MSI enabled).


PS: Marking as regression and high as it breaks the NIC on the device and
worked in 2.6.23 where MSI doesn't seem to be enabled by default.

PPS: The other bug 10301 mentioned above is probably assigned to the wrong
person and could be closed IMHO.


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