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* [PATCH] watchdog: smsc37b787_wdt: Mark expected switch fall-through
@ 2019-02-14 20:16 Gustavo A. R. Silva
  2019-02-18 16:08 ` Guenter Roeck
  0 siblings, 1 reply; 5+ messages in thread
From: Gustavo A. R. Silva @ 2019-02-14 20:16 UTC (permalink / raw)
  To: Wim Van Sebroeck, Guenter Roeck
  Cc: linux-watchdog, linux-kernel, Gustavo A. R. Silva, Kees Cook

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

This patch fixes the following warning:

drivers/watchdog/smsc37b787_wdt.c: In function ‘wb_smsc_wdt_ioctl’:
drivers/watchdog/smsc37b787_wdt.c:480:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
   wb_smsc_wdt_set_timeout(timeout);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/smsc37b787_wdt.c:482:2: note: here
  case WDIOC_GETTIMEOUT:
  ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/watchdog/smsc37b787_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/smsc37b787_wdt.c b/drivers/watchdog/smsc37b787_wdt.c
index 445ea1ad1fa9..c768dcd53034 100644
--- a/drivers/watchdog/smsc37b787_wdt.c
+++ b/drivers/watchdog/smsc37b787_wdt.c
@@ -478,7 +478,7 @@ static long wb_smsc_wdt_ioctl(struct file *file,
 			return -EINVAL;
 		timeout = new_timeout;
 		wb_smsc_wdt_set_timeout(timeout);
-		/* fall through and return the new timeout... */
+		/* fall through - and return the new timeout... */
 	case WDIOC_GETTIMEOUT:
 		new_timeout = timeout;
 		if (unit == UNIT_MINUTE)
-- 
2.20.1


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end of thread, other threads:[~2019-02-28 18:27 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2019-02-14 20:16 [PATCH] watchdog: smsc37b787_wdt: Mark expected switch fall-through Gustavo A. R. Silva
2019-02-18 16:08 ` Guenter Roeck
2019-02-26 17:42   ` Gustavo A. R. Silva
2019-02-26 17:45     ` Guenter Roeck
2019-02-28 18:27       ` Gustavo A. R. Silva

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