diff --git a/drivers/usb/gadget/f_mtp.c b/drivers/usb/gadget/f_mtp.c
index fcfb3c665705..f883043dff05 100644
--- a/drivers/usb/gadget/f_mtp.c
+++ b/drivers/usb/gadget/f_mtp.c
@@ -753,6 +753,11 @@ static void send_file_work(struct work_struct *data)
 	offset = dev->xfer_file_offset;
 	count = dev->xfer_file_length;
 
+	if (count < 0) {
+		dev->xfer_result = -EINVAL;
+		return;
+	}
+
 	DBG(cdev, "send_file_work(%lld %lld)\n", offset, count);
 
 	if (dev->xfer_send_header) {
@@ -855,6 +860,11 @@ static void receive_file_work(struct work_struct *data)
 	offset = dev->xfer_file_offset;
 	count = dev->xfer_file_length;
 
+	if (count < 0) {
+		dev->xfer_result = -EINVAL;
+		return;
+	}
+
 	DBG(cdev, "receive_file_work(%lld)\n", count);
 
 	while (count > 0 || write_req) {