diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 543811f..8e74657 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -133,7 +133,7 @@
 
 static int usbtmc_ioctl_abort_bulk_in(struct usbtmc_device_data *data)
 {
-	char *buffer;
+	u8 *buffer;
 	struct device *dev;
 	int rv;
 	int n;