Most recent kernel where this bug did not occur: < 2.6.16.17
Hardware Environment: VIA EPIA-PD
Problem Description:

VT6102 [Rhine-II] needs a routing of IRQ 9 to IRQ 11; e.g. with

---------
--- linux-2.6.17/drivers/pci/quirks.c.epia-pd	2006-06-18 03:49:35.000000000 +0200
+++ linux-2.6.17/drivers/pci/quirks.c	2006-06-24 17:02:19.000000000 +0200
@@ -651,6 +651,7 @@ static void quirk_via_irq(struct pci_dev
 		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
 	}
 }
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, 0x3065,   quirk_via_irq);
 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_via_irq);
 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, quirk_via_irq);
 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, quirk_via_irq);
---------

Without it, I get

| irq 9: nobody cared (try booting with the "irqpoll" option)
| <c0136636> __report_bad_irq+0x36/0x80  <c01367ee> note_interrupt+0x16e/0x1a0
| <c01c7f12> acpi_ev_sci_xrupt_handler+0x12/0x20  <c01361a3> handle_IRQ_event+0x23/0x50
| <c013623f> __do_IRQ+0x6f/0xa0  <c0105246> do_IRQ+0x36/0x50
| =======================
| <c010362a> common_interrupt+0x1a/0x20  <c0118fec> __do_softirq+0x2c/0x80
| <c0110520> do_page_fault+0x0/0x556  <c0105298> do_softirq+0x38/0x40
| =======================
| <c0105256> do_IRQ+0x46/0x50  <c010362a> common_interrupt+0x1a/0x20
| <c0110520> do_page_fault+0x0/0x556  <c0110651> do_page_fault+0x131/0x556
| <c0110520> do_page_fault+0x0/0x556  <c010374f> error_code+0x4f/0x60
| handlers:
| [<c01c2be0>] (acpi_irq+0x0/0x20)
| Disabling IRQ #9


# lspci 
00:00.0 Host bridge: VIA Technologies, Inc. VT8623 [Apollo CLE266]
00:01.0 PCI bridge: VIA Technologies, Inc. VT8633 [Apollo Pro266 AGP]
00:0f.0 Ethernet controller: VIA Technologies, Inc. VT6105 [Rhine-III] (rev 8b)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74)
00:14.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH A1 ISDN [Fritz] (rev 02)
01:00.0 VGA compatible controller: VIA Technologies, Inc. VT8623 [Apollo CLE266] integrated CastleRock graphics (rev 03)

# lspci -n
00:00.0 0600: 1106:3123
00:01.0 0604: 1106:b091
00:0f.0 0200: 1106:3106 (rev 8b)
00:10.0 0c03: 1106:3038 (rev 80)
00:10.1 0c03: 1106:3038 (rev 80)
00:10.2 0c03: 1106:3038 (rev 80)
00:10.3 0c03: 1106:3104 (rev 82)
00:11.0 0601: 1106:3177
00:11.1 0101: 1106:0571 (rev 06)
00:11.5 0401: 1106:3059 (rev 50)
00:12.0 0200: 1106:3065 (rev 74)
00:14.0 0280: 1244:0a00 (rev 02)
01:00.0 0300: 1106:3122 (rev 03)


Kernelmessages without patch:

| kernel: PCI: VIA IRQ fixup for 0000:00:11.1, from 255 to 11
| kernel: PCI: VIA IRQ fixup for 0000:00:10.0, from 9 to 11
| kernel: PCI: VIA IRQ fixup for 0000:00:10.2, from 9 to 11


and with patch (or kernel <2.6.16.17):

| kernel: PCI: VIA IRQ fixup for 0000:00:11.1, from 255 to 11
| kernel: PCI: VIA IRQ fixup for 0000:00:12.0, from 9 to 11
| kernel: PCI: VIA IRQ fixup for 0000:00:10.0, from 9 to 11
| kernel: PCI: VIA IRQ fixup for 0000:00:10.2, from 9 to 11