watchdog: pcwd_usb: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case I replaced "Fall" with a proper
"fall through" comment, which is what GCC is expecting to find.

Signed-off-by: Gustavo A. R. Silva <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index b9e376c8e2e36afa6fa7c7f172470b77033627e8..47fe4c5449c993337bb2cfab183d3cc2eac3307d 100644 (file)
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -456,8 +456,8 @@ static long usb_pcwd_ioctl(struct file *file, unsigned int cmd,
                        return -EINVAL;
 
                usb_pcwd_keepalive(usb_pcwd_device);
-               /* Fall */
        }
+               /* fall through */
 
        case WDIOC_GETTIMEOUT:
                return put_user(heartbeat, p);