USB: ftdi_sio: remove unused tx_bytes counter

Remove counter that is never exported.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 6 deletions

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 96686471472d..9594e357a914 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -88,7 +88,6 @@ struct ftdi_private {
 
         unsigned int latency;           /* latency setting in use */
         spinlock_t tx_lock;     /* spinlock for transmit state */
-        unsigned long tx_bytes;
         unsigned long tx_outstanding_bytes;
         unsigned long tx_outstanding_urbs;
         unsigned short max_packet_size;
@@ -1729,10 +1728,6 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
 
         dbg("%s", __func__);
 
-        spin_lock_irqsave(&priv->tx_lock, flags);
-        priv->tx_bytes = 0;
-        spin_unlock_irqrestore(&priv->tx_lock, flags);
-
         write_latency_timer(port);
 
         /* No error checking for this (will get errors later anyway) */
@@ -1917,7 +1912,6 @@ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
         } else {
                 spin_lock_irqsave(&priv->tx_lock, flags);
                 priv->tx_outstanding_bytes += count;
-                priv->tx_bytes += count;
                 spin_unlock_irqrestore(&priv->tx_lock, flags);
         }