linux-kernel - [PATCH v2] watchdog: pcwd_pci: mark expected switch fall-through

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Date:   Fri, 3 Nov 2017 11:02:30 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Wim Van Sebroeck <wim@...ana.be>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH v2] watchdog: pcwd_pci: 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 <garsilva@...eddedor.com>
---
Changes in v2:
 Place the "fall through" comment outside the unconditional code block.

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

diff --git a/drivers/watchdog/pcwd_pci.c b/drivers/watchdog/pcwd_pci.c
index c0d07ee..1f78f09 100644
--- a/drivers/watchdog/pcwd_pci.c
+++ b/drivers/watchdog/pcwd_pci.c
@@ -545,8 +545,8 @@ static long pcipcwd_ioctl(struct file *file, unsigned int cmd,
 			return -EINVAL;
 
 		pcipcwd_keepalive();
-		/* Fall */
 	}
+		/* fall through */
 
 	case WDIOC_GETTIMEOUT:
 		return put_user(heartbeat, p);
-- 
2.7.4