more trivial signedness fixes in drivers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 728b3c8..71d561f 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -658,7 +658,7 @@
 pci_restore_state(struct pci_dev *dev)
 {
 	int i;
-	int val;
+	u32 val;
 
 	/* PCI Express register must be restored first */
 	pci_restore_pcie_state(dev);