tty: serial: samsung: don't compare with zero an if (bitwise expression)

The bitwise AND with the fifo mask is used to check if the fifo is empty
or not, it doesn't care about the length, thus the comparison with zero
is implicit. Rely on the implicit comparison instead.

Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/r/20240119104526.1221243-14-tudor.ambarus@linaro.org
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 f8a8b459a86b6dddfe88d9284e2e11445b615e55..333ffa3a76a3f71691df43940caba68f7c22e22f 100644 (file)
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -988,7 +988,7 @@ static unsigned int s3c24xx_serial_tx_empty(struct uart_port *port)
        u32 ufcon = rd_regl(port, S3C2410_UFCON);
 
        if (ufcon & S3C2410_UFCON_FIFOMODE) {
-               if ((ufstat & info->tx_fifomask) != 0 ||
+               if ((ufstat & info->tx_fifomask) ||
                    (ufstat & info->tx_fifofull))
                        return 0;
                return TIOCSER_TEMT;