[PATCH] Add BUG_ON to IRT code

The IRT buffer must be 8-byte aligned
Signed-off-by: Randolph Chung <tausq@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/parisc/kernel/firmware.c

@@ -782,6 +782,8 @@ int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl)
 {
 	int retval;
 
+	BUG_ON((unsigned long)tbl & 0x7);
+
 	spin_lock_irq(&pdc_lock);
 	pdc_result[0] = num_entries;
 	retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL,