1 files changed, 5 insertions, 6 deletions

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index e3b9570a1eff..deae122c9c4b 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -2138,8 +2138,8 @@ int serial8250_do_startup(struct uart_port *port)
         /*
          * Clear the interrupt registers.
          */
-        if (serial_port_in(port, UART_LSR) & UART_LSR_DR)
-                serial_port_in(port, UART_RX);
+        serial_port_in(port, UART_LSR);
+        serial_port_in(port, UART_RX);
         serial_port_in(port, UART_IIR);
         serial_port_in(port, UART_MSR);
 
@@ -2300,8 +2300,8 @@ dont_test_tx_en:
          * saved flags to avoid getting false values from polling
          * routines or the previous session.
          */
-        if (serial_port_in(port, UART_LSR) & UART_LSR_DR)
-                serial_port_in(port, UART_RX);
+        serial_port_in(port, UART_LSR);
+        serial_port_in(port, UART_RX);
         serial_port_in(port, UART_IIR);
         serial_port_in(port, UART_MSR);
         up->lsr_saved_flags = 0;
@@ -2394,8 +2394,7 @@ void serial8250_do_shutdown(struct uart_port *port)
          * Read data port to reset things, and then unlink from
          * the IRQ chain.
          */
-        if (serial_port_in(port, UART_LSR) & UART_LSR_DR)
-                serial_port_in(port, UART_RX);
+        serial_port_in(port, UART_RX);
         serial8250_rpm_put(up);
 
         del_timer_sync(&up->timer);