tty: serial: samsung: 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@huawei.com>
Link: https://lore.kernel.org/r/1574424258-138975-1-git-send-email-chenwandun@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 83fd516..ab3c7d1 100644 (file)
--- 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);