diff options
| -rw-r--r-- | lib/utils/serial/uart8250.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/utils/serial/uart8250.c b/lib/utils/serial/uart8250.c index 82fb142a..17374082 100644 --- a/lib/utils/serial/uart8250.c +++ b/lib/utils/serial/uart8250.c @@ -133,10 +133,9 @@ int uart8250_init(unsigned long base, u32 in_freq, u32 baudrate, u32 reg_shift, set_reg(UART_FCR_OFFSET, 0x01); /* No modem control DTR RTS */ set_reg(UART_MCR_OFFSET, 0x00); - /* Clear line status */ - get_reg(UART_LSR_OFFSET); - /* Read receive buffer */ - get_reg(UART_RBR_OFFSET); + /* Clear line status and read receive buffer */ + if (get_reg(UART_LSR_OFFSET) & UART_LSR_DR) + get_reg(UART_RBR_OFFSET); /* Set scratchpad */ set_reg(UART_SCR_OFFSET, 0x00); |