diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index c812191..fd04206 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -1021,11 +1021,11 @@
 			ret = -EIO;
 			break;
 		}
-		if (copy_to_user((u8 *)arg, &val8, sizeof(val8)))
+		if (copy_to_user(argp, &val8, sizeof(val8)))
 			ret = -EFAULT;
 		break;
 	case SONYPI_IOCSFAN:
-		if (copy_from_user(&val8, (u8 *)arg, sizeof(val8))) {
+		if (copy_from_user(&val8, argp, sizeof(val8))) {
 			ret = -EFAULT;
 			break;
 		}
@@ -1038,7 +1038,7 @@
 			ret = -EIO;
 			break;
 		}
-		if (copy_to_user((u8 *)arg, &val8, sizeof(val8)))
+		if (copy_to_user(argp, &val8, sizeof(val8)))
 			ret = -EFAULT;
 		break;
 	default: