diff --git a/drivers/ata/pata_cs5536.c b/drivers/ata/pata_cs5536.c
index 89fc8db..1c4ff9b 100644
--- a/drivers/ata/pata_cs5536.c
+++ b/drivers/ata/pata_cs5536.c
@@ -85,7 +85,7 @@
 	PCI_IDE_CFG, PCI_IDE_DTC, PCI_IDE_CAST, PCI_IDE_ETC,
 };
 
-static inline int cs5536_read(struct pci_dev *pdev, int reg, int *val)
+static inline int cs5536_read(struct pci_dev *pdev, int reg, u32 *val)
 {
 	if (unlikely(use_msr)) {
 		u32 dummy;