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Diffstat (limited to 'kernel/drivers/usb/serial/symbolserial.c')
-rw-r--r--kernel/drivers/usb/serial/symbolserial.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/kernel/drivers/usb/serial/symbolserial.c b/kernel/drivers/usb/serial/symbolserial.c
index 6ed804450..37f3ad15e 100644
--- a/kernel/drivers/usb/serial/symbolserial.c
+++ b/kernel/drivers/usb/serial/symbolserial.c
@@ -60,17 +60,15 @@ static void symbol_int_callback(struct urb *urb)
usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
+ /*
+ * Data from the device comes with a 1 byte header:
+ *
+ * <size of data> <data>...
+ */
if (urb->actual_length > 1) {
- data_length = urb->actual_length - 1;
-
- /*
- * Data from the device comes with a 1 byte header:
- *
- * <size of data>data...
- * This is real data to be sent to the tty layer
- * we pretty much just ignore the size and send everything
- * else to the tty layer.
- */
+ data_length = data[0];
+ if (data_length > (urb->actual_length - 1))
+ data_length = urb->actual_length - 1;
tty_insert_flip_string(&port->port, &data[1], data_length);
tty_flip_buffer_push(&port->port);
} else {