tty: serial: constify dev_pm_ops structures

Declare dev_pm_ops structures as const as they are only stored in the pm
field of a device_driver structure. This field is of type const, so
dev_pm_ops structures having similar properties can be declared const
too.

Size details after cross compiling the .o file for blackfin architecture.

File size before:
  text	   data	    bss	    dec	    hex	filename
   3572	    320	     16	   3908	    f44 tty/serial/bfin_sport_uart.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   3664	    228	     16	   3908	    f44 tty/serial/bfin_sport_uart.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index 984e1c0..6b03fb1 100644 (file)
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -740,7 +740,7 @@ static int sport_uart_resume(struct device *dev)
        return 0;
 }
 
-static struct dev_pm_ops bfin_sport_uart_dev_pm_ops = {
+static const struct dev_pm_ops bfin_sport_uart_dev_pm_ops = {
        .suspend        = sport_uart_suspend,
        .resume         = sport_uart_resume,
 };