From mboxrd@z Thu Jan 1 00:00:00 1970 From: zhong jiang Subject: [PATCH] pch_uart: remove set but not used variable 'tx_empty' Date: Tue, 23 Oct 2018 21:21:34 +0800 Message-ID: <1540300894-27202-1-git-send-email-zhongjiang@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: gregkh@linuxfoundation.org Cc: jslaby@suse.com, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-serial@vger.kernel.org tx_empty is not used after setting its value. It is safe to remove the unused variable. Signed-off-by: zhong jiang --- drivers/tty/serial/pch_uart.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index cb85002..9ed121f 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -933,7 +933,6 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv) struct scatterlist *sg; int nent; int fifo_size; - int tx_empty; struct dma_async_tx_descriptor *desc; int num; int i; @@ -958,11 +957,9 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv) } fifo_size = max(priv->fifo_size, 1); - tx_empty = 1; if (pop_tx_x(priv, xmit->buf)) { pch_uart_hal_write(priv, xmit->buf, 1); port->icount.tx++; - tx_empty = 0; fifo_size--; } -- 1.7.12.4