--- linux-2.4.22-1.2174.nptl.asp/drivers/acpi/pci_link.c	2004-02-20 00:52:23.000000000 +0300
+++ linux-2.4.22-1.2174.nptl.aspmy/drivers/acpi/pci_link.c	2004-04-24 13:15:09.000000000 +0400
@@ -261,12 +261,6 @@
 		goto end;
 	}
 
-	/*
-	 * Note that we don't validate that the current IRQ (_CRS) exists
-	 * within the possible IRQs (_PRS): we blindly assume that whatever
-	 * IRQ a boot-enabled Link device is set to is the correct one.
-	 * (Required to support systems such as the Toshiba 5005-S504.)
-	 */
 	link->irq.active = irq;
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link at IRQ %d \n", link->irq.active));
@@ -495,13 +489,26 @@
 static int acpi_pci_link_allocate(struct acpi_pci_link* link) {
 	int irq;
 	int i;
+	int irq_allowed;
 
 	ACPI_FUNCTION_TRACE("acpi_pci_link_allocate");
 
 	if (link->irq.setonboot)
 		return_VALUE(0);
 
-	if (link->irq.active) {
+	if(link->irq.active) {
+		irq_allowed = 0;
+		for (i=(link->irq.possible_count-1); i>0; i--)
+			if(link->irq.possible[i] == link->irq.active)
+			{
+				irq_allowed = 1;
+				break;
+			}
+	} else {
+		irq_allowed = 1;
+	}
+	
+	if (link->irq.active && irq_allowed) {
 		irq = link->irq.active;
 	} else {
 		irq = link->irq.possible[0];