Think 2.4.10 broke my PCI subsystem.

[Kevin Carpenter]

I've recently been okaying around with low cost motherboards and have been
problems on two of them:  the BIOSTAT micro-ATX mobo M7VKQ, and the ESC L7SOM
mobos.

BOth work fine so long as I hold the kernel to 2.4.9 or earlier.  Once the
2.4.10 patch is applied, the kernel no longer recognises the PCI Buss.

Under 2.4.9 /proc/pci shows:

PCI devices found:
  Bus  0, device   0, function  0:
    Host bridge: PCI device 1039:0740 (Silicon Integrated Systems [SiS]) (rev 1).
      Master Capable.  Latency=32.  
      Non-prefetchable 32 bit memory at 0xe8000000 [0xe8ffffff].
  Bus  0, device   1, function  0:
    PCI bridge: Silicon Integrated Systems [SiS] 5591/5592 AGP (rev 0).
      Master Capable.  Latency=99.  Min Gnt=12.
  Bus  0, device   2, function  0:
    ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513 (rev 0).
  Bus  0, device   2, function  5:
    IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev 208).
      Master Capable.  Latency=16.  
      I/O at 0x4000 [0x400f].
  Bus  0, device   2, function  7:
    Multimedia audio controller: PCI device 1039:7012 (Silicon Integrated Systems [SiS]) (rev 160).
      IRQ 10.
      Master Capable.  Latency=32.  Min Gnt=52.Max Lat=11.
      I/O at 0xe000 [0xe0ff].
      I/O at 0xe400 [0xe47f].
  Bus  0, device  15, function  0:
    Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 16).
      IRQ 11.
      Master Capable.  Latency=32.  Min Gnt=32.Max Lat=64.
      I/O at 0xe800 [0xe8ff].
      Non-prefetchable 32 bit memory at 0xe9102000 [0xe91020ff].
  Bus  1, device   0, function  0:
    VGA compatible controller: PCI device 1039:6325 (Silicon Integrated Systems [SiS]) (rev 0).
      Prefetchable 32 bit memory at 0xe0000000 [0xe7ffffff].
      Non-prefetchable 32 bit memory at 0xe9000000 [0xe901ffff].
      I/O at 0xd000 [0xd07f].

Using lspci:

00:00.0 Host bridge: Silicon Integrated Systems [SiS] 740 Host (rev 01)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] 5591/5592 AGP
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev d0)
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 PCI Audio Accelerator (rev a0)
00:0f.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS]: Unknown device 6325

POSIX conformance testing by UNIFIX
PCI: PCI BIOS revision 2.10 entry at 0xfb5f0, last bus=1
PCI: Probing PCI hardware
PCI: Using IRQ router SIS [1039/0008] at 00:02.0
Linux NET4.0 for Linux 2.4

After rebuilding with any kernel greater than patch level 9, I get the following
messages as part of the boot sequence:

mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xfb5f0, last bus=1
PCI: System does not support PCI
isapnp: Scanning for PnP cards...

HELP PLEASE!  I don't want to be stuck on 2.4.9 forever!

I have one development box that I can do just about anything you wish to. 
Please let me know how to help.

Thanks,

Kevin C.
-- 
Kevin Carpenter:  [e-mail]
Kevin's Home Page: http://www.seaplace.org/kevinc
(Expressing his comments from home in St. Louis, where this message originated)