[PATCH] ppc32: Make the Powerstack II Pro4000 boot again

This patch restores the original behaviour of prep_pcibios_fixup() to only
call prep_pib_init() on machines with an openpic.  This allows the
Powerstack II Pro4000 to boot again.

Signed-off-by: Leigh Brown <leigh@solinno.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc/platforms/prep_pci.c

@@ -1245,7 +1245,12 @@ prep_pcibios_fixup(void)
 		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
 	}
 
-	/* Setup the Winbond or Via PIB */
+	/* Setup the Winbond or Via PIB - prep_pib_init() is coded for
+	 * the non-openpic case, but it breaks (at least) the Utah
+	 * (Powerstack II Pro4000), so only call it if we have an
+	 * openpic.
+	 */
+	if (have_openpic)
 		prep_pib_init();
 }