Merge tag 'tty-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

[cascardo/linux.git] / drivers / tty / serial / 8250 / 8250_dw.c

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 5e4b80e..459d726 100644 (file)
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -298,12 +298,17 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data)
                        p->serial_out = dw8250_serial_out32be;
                }
        } else if (has_acpi_companion(p->dev)) {
-               p->iotype = UPIO_MEM32;
-               p->regshift = 2;
-               p->serial_in = dw8250_serial_in32;
+               const struct acpi_device_id *id;
+
+               id = acpi_match_device(p->dev->driver->acpi_match_table,
+                                      p->dev);
+               if (id && !strcmp(id->id, "APMC0D08")) {
+                       p->iotype = UPIO_MEM32;
+                       p->regshift = 2;
+                       p->serial_in = dw8250_serial_in32;
+                       data->uart_16550_compatible = true;
+               }
                p->set_termios = dw8250_set_termios;
-               /* So far none of there implement the Busy Functionality */
-               data->uart_16550_compatible = true;
        }
 
        /* Platforms with iDMA */