USB: ftdi_sio: remove unused rx_byte counter
Remove unused rx_byte counter which is never exposed as noted by Alan Cox. Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -81,7 +81,6 @@ struct ftdi_private {
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struct delayed_work rx_work;
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struct usb_serial_port *port;
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int rx_processed;
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unsigned long rx_bytes;
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__u16 interface; /* FT2232C, FT2232H or FT4232H port interface
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(0 for FT232/245) */
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@ -1699,9 +1698,6 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
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spin_lock_irqsave(&priv->tx_lock, flags);
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priv->tx_bytes = 0;
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spin_unlock_irqrestore(&priv->tx_lock, flags);
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spin_lock_irqsave(&priv->rx_lock, flags);
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priv->rx_bytes = 0;
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spin_unlock_irqrestore(&priv->rx_lock, flags);
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write_latency_timer(port);
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@ -2014,8 +2010,6 @@ static void ftdi_read_bulk_callback(struct urb *urb)
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struct usb_serial_port *port = urb->context;
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struct tty_struct *tty;
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struct ftdi_private *priv;
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unsigned long countread;
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unsigned long flags;
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int status = urb->status;
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if (urb->number_of_packets > 0) {
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@ -2054,13 +2048,6 @@ static void ftdi_read_bulk_callback(struct urb *urb)
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goto out;
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}
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/* count data bytes, but not status bytes */
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countread = urb->actual_length;
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countread -= 2 * DIV_ROUND_UP(countread, priv->max_packet_size);
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spin_lock_irqsave(&priv->rx_lock, flags);
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priv->rx_bytes += countread;
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spin_unlock_irqrestore(&priv->rx_lock, flags);
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ftdi_process_read(&priv->rx_work.work);
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out:
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tty_kref_put(tty);
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