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USB: ftdi_sio: remove unused rx_byte counter

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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>
This commit is contained in:
Johan Hovold 2009-10-07 20:05:05 +02:00 committed by Greg Kroah-Hartman
parent 0cbd81a9f6
commit 63b0061246
1 changed files with 0 additions and 13 deletions
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13
drivers/usb/serial/ftdi_sio.c
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@ -81,7 +81,6 @@ struct ftdi_private {
struct delayed_work rx_work;
struct usb_serial_port *port;
int rx_processed;
unsigned long rx_bytes;
__u16 interface; /* FT2232C, FT2232H or FT4232H port interface
(0 for FT232/245) */
@ -1699,9 +1698,6 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
spin_lock_irqsave(&priv->tx_lock, flags);
priv->tx_bytes = 0;
spin_unlock_irqrestore(&priv->tx_lock, flags);
spin_lock_irqsave(&priv->rx_lock, flags);
priv->rx_bytes = 0;
spin_unlock_irqrestore(&priv->rx_lock, flags);
write_latency_timer(port);
@ -2014,8 +2010,6 @@ static void ftdi_read_bulk_callback(struct urb *urb)
struct usb_serial_port *port = urb->context;
struct tty_struct *tty;
struct ftdi_private *priv;
unsigned long countread;
unsigned long flags;
int status = urb->status;
if (urb->number_of_packets > 0) {
@ -2054,13 +2048,6 @@ static void ftdi_read_bulk_callback(struct urb *urb)
goto out;
}
/* count data bytes, but not status bytes */
countread = urb->actual_length;
countread -= 2 * DIV_ROUND_UP(countread, priv->max_packet_size);
spin_lock_irqsave(&priv->rx_lock, flags);
priv->rx_bytes += countread;
spin_unlock_irqrestore(&priv->rx_lock, flags);
ftdi_process_read(&priv->rx_work.work);
out:
tty_kref_put(tty);