On Sat, Mar 27, 2021 at 11:27:44PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> The variable error is initialized to 0 and is set to 1 this
> value is never read as it is on an immediate return path. The
> only read of error is to check it is 0 and this check is always
> true at that point of the code. The variable is redundant and
> can be removed.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
> drivers/usb/serial/iuu_phoenix.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
> index 093afd67a664..19753611e7b0 100644
> --- a/drivers/usb/serial/iuu_phoenix.c
> +++ b/drivers/usb/serial/iuu_phoenix.c
> @@ -643,7 +643,6 @@ static void iuu_uart_read_callback(struct urb *urb)
> struct iuu_private *priv = usb_get_serial_port_data(port);
> unsigned long flags;
> int status = urb->status;
> - int error = 0;
> int len = 0;
> unsigned char *data = urb->transfer_buffer;
> priv->poll++;
> @@ -660,12 +659,11 @@ static void iuu_uart_read_callback(struct urb *urb)
> if (urb->actual_length > 1) {
> dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
> urb->actual_length);
> - error = 1;
> return;
Heh, I guess the author at some point intended not return here, but who
knows. The rest of this function is about as esoteric.
> }
> /* if len > 0 call readbuf */
>
> - if (len > 0 && error == 0) {
> + if (len > 0) {
> dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
> __func__, len);
> status = iuu_read_buf(port, len);
Now applied, thanks.
Johan
