watchdog: pcwd_usb: mark expected switch fall-through

Web:        https://git.kernel.org/torvalds/c/3d002ea611ad964c28d9a97ab500a0272deec776
Commit:     3d002ea611ad964c28d9a97ab500a0272deec776
Parent:     fd846b57a6b0b551cf7a31c301bd9705759ce825
Refname:    refs/heads/master
Author:     Gustavo A. R. Silva <[email protected]>
AuthorDate: Fri Nov 3 09:53:41 2017 -0500
Committer:  Wim Van Sebroeck <[email protected]>
CommitDate: Thu Dec 28 20:45:29 2017 +0100

    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]>
---
 drivers/watchdog/pcwd_usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index b9e376c8e2e3..47fe4c5449c9 100644
--- 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);
--
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