There is no need to read USR2 twice at every loop iteration: get rid of the second read. Signed-off-by: Sergey Organov <sorganov@xxxxxxxxx> --- drivers/tty/serial/imx.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index b96b0edc7854..c44a7293c013 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -904,7 +904,6 @@ 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)) -- 2.30.1