greybus: uart: Update line coding settings only when needed

The check for line coding changed should use memcmp and not memcpy.

Testing done: trivial

Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index c580fe06f55489b1e18292238d12d884e5352979..be718918c135eaa6ac65c3d14fcf3a04c4a3d7cd 100644 (file)
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -383,7 +383,7 @@ static void gb_tty_set_termios(struct tty_struct *tty,
                send_control(gb_tty, newctrl);
        }
 
-       if (memcpy(&gb_tty->line_coding, &newline, sizeof(newline))) {
+       if (memcmp(&gb_tty->line_coding, &newline, sizeof(newline))) {
                memcpy(&gb_tty->line_coding, &newline, sizeof(newline));
                send_line_coding(gb_tty);
        }