diff --git a/drivers/pci/syscall.c b/drivers/pci/syscall.c
index 61a6fe3..803acbf 100644
--- a/drivers/pci/syscall.c
+++ b/drivers/pci/syscall.c
@@ -52,13 +52,13 @@ SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn,
 
 	switch (len) {
 	case 1:
-		err = put_user(byte, (unsigned char __user *)buf);
+		err = put_user(byte, (u8 __user *)buf);
 		break;
 	case 2:
-		err = put_user(word, (unsigned short __user *)buf);
+		err = put_user(word, (u16 __user *)buf);
 		break;
 	case 4:
-		err = put_user(dword, (unsigned int __user *)buf);
+		err = put_user(dword, (u32 __user *)buf);
 		break;
 	}
 	pci_dev_put(dev);
@@ -70,13 +70,13 @@ SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn,
 	   they get instead of a machine check on x86.  */
 	switch (len) {
 	case 1:
-		put_user(-1, (unsigned char __user *)buf);
+		put_user(-1, (u8 __user *)buf);
 		break;
 	case 2:
-		put_user(-1, (unsigned short __user *)buf);
+		put_user(-1, (u16 __user *)buf);
 		break;
 	case 4:
-		put_user(-1, (unsigned int __user *)buf);
+		put_user(-1, (u32 __user *)buf);
 		break;
 	}
 	pci_dev_put(dev);