1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 4658e3e0ec42..06525f10e364 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -96,7 +96,8 @@ static void dw8250_serial_out(struct uart_port *p, int offset, int value)
         if (offset == UART_LCR) {
                 int tries = 1000;
                 while (tries--) {
-                        if (value == p->serial_in(p, UART_LCR))
+                        unsigned int lcr = p->serial_in(p, UART_LCR);
+                        if ((value & ~UART_LCR_SPAR) == (lcr & ~UART_LCR_SPAR))
                                 return;
                         dw8250_force_idle(p);
                         writeb(value, p->membase + (UART_LCR << p->regshift));
@@ -132,7 +133,8 @@ static void dw8250_serial_out32(struct uart_port *p, int offset, int value)
         if (offset == UART_LCR) {
                 int tries = 1000;
                 while (tries--) {
-                        if (value == p->serial_in(p, UART_LCR))
+                        unsigned int lcr = p->serial_in(p, UART_LCR);
+                        if ((value & ~UART_LCR_SPAR) == (lcr & ~UART_LCR_SPAR))
                                 return;
                         dw8250_force_idle(p);
                         writel(value, p->membase + (UART_LCR << p->regshift));
@@ -455,6 +457,8 @@ MODULE_DEVICE_TABLE(of, dw8250_of_match);
 static const struct acpi_device_id dw8250_acpi_match[] = {
         { "INT33C4", 0 },
         { "INT33C5", 0 },
+        { "INT3434", 0 },
+        { "INT3435", 0 },
         { "80860F0A", 0 },
         { },
 };