s390/pci: use phys_to_virt() for AIBVs/DIBVs

The adapter and directed interrupt bit vectors need to be referenced in
the FIB with their physical not their virtual address. So use
virt_to_phys() as approrpiate.

Note: this currently doesn't fix a real bug, since virtual addresses
are indentical to physical ones.
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/pci/pci_irq.c

@@ -45,9 +45,9 @@ static int zpci_set_airq(struct zpci_dev *zdev)
 	fib.fmt0.isc = PCI_ISC;
 	fib.fmt0.sum = 1;	/* enable summary notifications */
 	fib.fmt0.noi = airq_iv_end(zdev->aibv);
-	fib.fmt0.aibv = (unsigned long) zdev->aibv->vector;
+	fib.fmt0.aibv = virt_to_phys(zdev->aibv->vector);
 	fib.fmt0.aibvo = 0;	/* each zdev has its own interrupt vector */
-	fib.fmt0.aisb = (unsigned long) zpci_sbv->vector + (zdev->aisb/64)*8;
+	fib.fmt0.aisb = virt_to_phys(zpci_sbv->vector) + (zdev->aisb / 64) * 8;
 	fib.fmt0.aisbo = zdev->aisb & 63;
 
 	return zpci_mod_fc(req, &fib, &status) ? -EIO : 0;
@@ -422,7 +422,7 @@ static int __init zpci_directed_irq_init(void)
 
 	iib.diib.isc = PCI_ISC;
 	iib.diib.nr_cpus = num_possible_cpus();
-	iib.diib.disb_addr = (u64) zpci_sbv->vector;
+	iib.diib.disb_addr = virt_to_phys(zpci_sbv->vector);
 	__zpci_set_irq_ctrl(SIC_IRQ_MODE_DIRECT, 0, &iib);
 
 	zpci_ibv = kcalloc(num_possible_cpus(), sizeof(*zpci_ibv),