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/ata/sata_via.c b/drivers/ata/sata_via.c
index 1dc9b4f..cc6ee08 100644
--- a/drivers/ata/sata_via.c
+++ b/drivers/ata/sata_via.c
@@ -505,7 +505,7 @@
 	int rc;
 	struct ata_host *host;
 	int board_id = (int) ent->driver_data;
-	const int *bar_sizes;
+	const unsigned *bar_sizes;
 
 	if (!printed_version++)
 		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");