diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 658ac977cb56..a7a504fc82b9 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -281,10 +281,11 @@ static void __devinit pci_read_bridge_io(struct pci_bus *child)
 
 	if ((io_base_lo & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) {
 		u16 io_base_hi, io_limit_hi;
+
 		pci_read_config_word(dev, PCI_IO_BASE_UPPER16, &io_base_hi);
 		pci_read_config_word(dev, PCI_IO_LIMIT_UPPER16, &io_limit_hi);
-		base |= (io_base_hi << 16);
-		limit |= (io_limit_hi << 16);
+		base |= ((unsigned long) io_base_hi << 16);
+		limit |= ((unsigned long) io_limit_hi << 16);
 	}
 
 	if (base && base <= limit) {
@@ -312,8 +313,8 @@ static void __devinit pci_read_bridge_mmio(struct pci_bus *child)
 	res = child->resource[1];
 	pci_read_config_word(dev, PCI_MEMORY_BASE, &mem_base_lo);
 	pci_read_config_word(dev, PCI_MEMORY_LIMIT, &mem_limit_lo);
-	base = (mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16;
-	limit = (mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16;
+	base = ((unsigned long) mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16;
+	limit = ((unsigned long) mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16;
 	if (base && base <= limit) {
 		res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM;
 		region.start = base;
@@ -334,11 +335,12 @@ static void __devinit pci_read_bridge_mmio_pref(struct pci_bus *child)
 	res = child->resource[2];
 	pci_read_config_word(dev, PCI_PREF_MEMORY_BASE, &mem_base_lo);
 	pci_read_config_word(dev, PCI_PREF_MEMORY_LIMIT, &mem_limit_lo);
-	base = (mem_base_lo & PCI_PREF_RANGE_MASK) << 16;
-	limit = (mem_limit_lo & PCI_PREF_RANGE_MASK) << 16;
+	base = ((unsigned long) mem_base_lo & PCI_PREF_RANGE_MASK) << 16;
+	limit = ((unsigned long) mem_limit_lo & PCI_PREF_RANGE_MASK) << 16;
 
 	if ((mem_base_lo & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
 		u32 mem_base_hi, mem_limit_hi;
+
 		pci_read_config_dword(dev, PCI_PREF_BASE_UPPER32, &mem_base_hi);
 		pci_read_config_dword(dev, PCI_PREF_LIMIT_UPPER32, &mem_limit_hi);
 
@@ -349,8 +351,8 @@ static void __devinit pci_read_bridge_mmio_pref(struct pci_bus *child)
 		 */
 		if (mem_base_hi <= mem_limit_hi) {
 #if BITS_PER_LONG == 64
-			base |= ((long) mem_base_hi) << 32;
-			limit |= ((long) mem_limit_hi) << 32;
+			base |= ((unsigned long) mem_base_hi) << 32;
+			limit |= ((unsigned long) mem_limit_hi) << 32;
 #else
 			if (mem_base_hi || mem_limit_hi) {
 				dev_err(&dev->dev, "can't handle 64-bit "