ns16550: setup default lsr_mask for DT systems too

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-By: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Tested-By: Chen Baozi <baozich@gmail.com>
Cc: keir@xen.org

diff --git a/xen/drivers/char/ns16550.c b/xen/drivers/char/ns16550.c
index 429d786e5efe409f32172b8ad49b6f08475ecec3..2dd32b21f48e9281c0516056492b0e73b22ccbe4 100644 (file)
--- a/xen/drivers/char/ns16550.c
+++ b/xen/drivers/char/ns16550.c
@@ -1129,6 +1129,8 @@ static int __init ns16550_uart_dt_init(struct dt_device_node *dev,
     uart->stop_bits = 1;
     /* Default is no transmit FIFO. */
     uart->fifo_size = 1;
+    /* Default lsr_mask = UART_LSR_THRE */
+    uart->lsr_mask = UART_LSR_THRE;
 
     res = dt_device_get_address(dev, 0, &uart->io_base, &io_size);
     if ( res )