[PATCH] VIA IRQ quirk

Delete quirk_via_bridge(), restore quirk_via_irqpic() -- but now
improved to be invoked upon device ENABLE, and now only for VIA devices
-- not all devices behind VIA bridges.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/acpi/pci_irq.c

@@ -391,7 +391,6 @@ acpi_pci_irq_enable (
 	u8			pin = 0;
 	int			edge_level = ACPI_LEVEL_SENSITIVE;
 	int			active_high_low = ACPI_ACTIVE_LOW;
-	extern int		via_interrupt_line_quirk;
 	char			*link = NULL;
 
 	ACPI_FUNCTION_TRACE("acpi_pci_irq_enable");
@@ -444,9 +443,6 @@ acpi_pci_irq_enable (
 		}
  	}
 
-	if (via_interrupt_line_quirk)
-		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq & 15);
-
 	dev->irq = acpi_register_gsi(irq, edge_level, active_high_low);
 
 	printk(KERN_INFO PREFIX "PCI Interrupt %s[%c] -> ",