serial: 8250: 8250_core: Fix irq name for 8250 serial IRQ

Using dev_name() as IRQ name during request_irq() might be misleading in
case of serial over PCI. Therefore identify serial port IRQ using
uart_port's name field. This will help mapping IRQs to appropriate
ttySN(where N is the serial port index) instances.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index f83b69f30987a774f451013f792b2ca93644706b..48a07e2f617fb69dbcd55cd03205e7abcde8a39b 100644 (file)
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -218,7 +218,7 @@ static int serial_link_irq_chain(struct uart_8250_port *up)
                spin_unlock_irq(&i->lock);
                irq_flags |= up->port.irqflags;
                ret = request_irq(up->port.irq, serial8250_interrupt,
-                                 irq_flags, dev_name(up->port.dev), i);
+                                 irq_flags, up->port.name, i);
                if (ret < 0)
                        serial_do_unlink(i, up);
        }