linux-kernel - [PATCH] {tty: serial, nand: onenand}: remove variable 'ufstat' set but not used

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Date:   Fri, 22 Nov 2019 19:12:39 +0800
From:   Chen Wandun <chenwandun@...wei.com>
To:     <gregkh@...uxfoundation.org>, <jslaby@...e.com>,
        <linux-serial@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <chenwandun@...wei.com>
Subject: [PATCH] {tty: serial, nand: onenand}: remove variable 'ufstat' set but not used

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/tty/serial/samsung_tty.c: In function s3c24xx_serial_rx_chars_dma:
drivers/tty/serial/samsung_tty.c:549:24: warning: variable ufstat set but not used [-Wunused-but-set-variable]

Signed-off-by: Chen Wandun <chenwandun@...wei.com>
---
 drivers/tty/serial/samsung_tty.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 83fd516..ab3c7d1 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -546,7 +546,7 @@ static void s3c24xx_serial_rx_drain_fifo(struct s3c24xx_uart_port *ourport);
 
 static irqreturn_t s3c24xx_serial_rx_chars_dma(void *dev_id)
 {
-	unsigned int utrstat, ufstat, received;
+	unsigned int utrstat, received;
 	struct s3c24xx_uart_port *ourport = dev_id;
 	struct uart_port *port = &ourport->port;
 	struct s3c24xx_uart_dma *dma = ourport->dma;
@@ -556,7 +556,7 @@ static irqreturn_t s3c24xx_serial_rx_chars_dma(void *dev_id)
 	struct dma_tx_state state;
 
 	utrstat = rd_regl(port, S3C2410_UTRSTAT);
-	ufstat = rd_regl(port, S3C2410_UFSTAT);
+	rd_regl(port, S3C2410_UFSTAT);
 
 	spin_lock_irqsave(&port->lock, flags);
 
-- 
2.7.4