serial: imx: remove redundant USR2 read from FIFO reading loop
There is no need to read USR2 twice at every loop iteration: get rid of the
second read.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Link: https://lore.kernel.org/r/20230201142700.4346-6-sorganov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index ef0b9d3..c578cdc 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -906,7 +906,6 @@ static irqreturn_t __imx_uart_rxint(int irq, void *dev_id)
rx = imx_uart_readl(sport, URXD0);
- usr2 = imx_uart_readl(sport, USR2);
if (usr2 & USR2_BRCD) {
imx_uart_writel(sport, USR2_BRCD, USR2);
if (uart_handle_break(&sport->port))
