From: zhong jiang <zhongjiang@huawei.com>
Date: Tue, 23 Oct 2018 13:21:34 +0000 (+0800)
Subject: pch_uart: remove set but not used variable 'tx_empty'
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=114c97cee6d37787135bd548bbd55c283463ac62;p=openwrt%2Fstaging%2Fblogic.git

pch_uart: remove set but not used variable 'tx_empty'

tx_empty is not used after setting its value. It is safe to remove
the unused variable.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Reviewed-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index cb85002a10d8..9ed121f08a54 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--;
 	}