tty/8250 Add XR17D15x devices to the exar_handle_irq override

Add XR17D15x devices to the exar_handle_irq override: they have the
same extra interrupt register that could fire and never be serviced by
the standard handle_irq.

Signed-off-by: Matt Schulte <matts@commtech-fastcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index 4ab8af797ad9..d085e3a8ec06 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -1578,7 +1578,8 @@ static int exar_handle_irq(struct uart_port *port)
 
         ret = serial8250_handle_irq(port, iir);
 
-        if (port->type == PORT_XR17V35X) {
+        if ((port->type == PORT_XR17V35X) ||
+           (port->type == PORT_XR17D15X)) {
                 int0 = serial_port_in(port, 0x80);
                 int1 = serial_port_in(port, 0x81);
                 int2 = serial_port_in(port, 0x82);
@@ -2689,7 +2690,8 @@ static void serial8250_config_port(struct uart_port *port, int flags)
                 serial8250_release_std_resource(up);
 
         /* Fixme: probably not the best place for this */
-        if (port->type == PORT_XR17V35X)
+        if ((port->type == PORT_XR17V35X) ||
+           (port->type == PORT_XR17D15X))
                 port->handle_irq = exar_handle_irq;
 }