atmel_serial: show tty name in /proc/interrupts

When possible, pass the tty name to request_irq() so that the user can easily
distinguish the different serial ports in /proc/interrupts.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Tested-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 8cea6068f03e..fad245b064d6 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -793,6 +793,7 @@ static void atmel_tasklet_func(unsigned long data)
 static int atmel_startup(struct uart_port *port)
 {
         struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+        struct tty_struct *tty = port->info->tty;
         int retval;
 
         /*
@@ -806,7 +807,7 @@ static int atmel_startup(struct uart_port *port)
          * Allocate the IRQ
          */
         retval = request_irq(port->irq, atmel_interrupt, IRQF_SHARED,
-                        "atmel_serial", port);
+                        tty ? tty->name : "atmel_serial", port);
         if (retval) {
                 printk("atmel_serial: atmel_startup - Can't get irq\n");
                 return retval;