USB: kobil_sct: Remove unused transfer buffer allocs

Commit 90419cfcb5d9c889b10dc51363c56a4d394d670e,
"USB: kobil_sct: fix control requests without data stage", removed
the bogus data buffer arguments, but still allocate transfer
buffers which are not used.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Johan Hovold <johan@kernel.org>

diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index 078f9ed419c84fbf1cbbdd41741ba20051a03187..3d2bd65df0fc71e05ca330a136b8c51280f9ab3d 100644 (file)
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -414,8 +414,6 @@ static int kobil_tiocmset(struct tty_struct *tty,
        int result;
        int dtr = 0;
        int rts = 0;
-       unsigned char *transfer_buffer;
-       int transfer_buffer_length = 8;
 
        /* FIXME: locking ? */
        priv = usb_get_serial_port_data(port);
@@ -425,11 +423,6 @@ static int kobil_tiocmset(struct tty_struct *tty,
                return -EINVAL;
        }
 
-       /* allocate memory for transfer buffer */
-       transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
-       if (!transfer_buffer)
-               return -ENOMEM;
-
        if (set & TIOCM_RTS)
                rts = 1;
        if (set & TIOCM_DTR)
@@ -469,7 +462,6 @@ static int kobil_tiocmset(struct tty_struct *tty,
                        KOBIL_TIMEOUT);
        }
        dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
-       kfree(transfer_buffer);
        return (result < 0) ? result : 0;
 }
 
@@ -530,8 +522,6 @@ static int kobil_ioctl(struct tty_struct *tty,
 {
        struct usb_serial_port *port = tty->driver_data;
        struct kobil_private *priv = usb_get_serial_port_data(port);
-       unsigned char *transfer_buffer;
-       int transfer_buffer_length = 8;
        int result;
 
        if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
@@ -541,10 +531,6 @@ static int kobil_ioctl(struct tty_struct *tty,
 
        switch (cmd) {
        case TCFLSH:
-               transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
-               if (!transfer_buffer)
-                       return -ENOBUFS;
-
                result = usb_control_msg(port->serial->dev,
                          usb_sndctrlpipe(port->serial->dev, 0),
                          SUSBCRequest_Misc,
@@ -559,7 +545,6 @@ static int kobil_ioctl(struct tty_struct *tty,
                dev_dbg(&port->dev,
                        "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
                        __func__, result);
-               kfree(transfer_buffer);
                return (result < 0) ? -EIO: 0;
        default:
                return -ENOIOCTLCMD;