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watchdog: wdt977: Mark expected switch fall-through

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Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: arm):

drivers/watchdog/wdt977.c: In function ‘wdt977_ioctl’:
  LD [M]  drivers/media/platform/vicodec/vicodec.o
drivers/watchdog/wdt977.c:400:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
   wdt977_keepalive();
   ^~~~~~~~~~~~~~~~~~
drivers/watchdog/wdt977.c:403:2: note: here
  case WDIOC_GETTIMEOUT:
  ^~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20190729223159.GA20878@embeddedor
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Gustavo A. R. Silva 2019-07-29 17:31:59 -05:00 committed by Wim Van Sebroeck
parent ca58397c53
commit 2c01764082
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/wdt977.c
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@ -398,7 +398,7 @@ static long wdt977_ioctl(struct file *file, unsigned int cmd,
return -EINVAL;
wdt977_keepalive();
/* Fall */
/* Fall through */
case WDIOC_GETTIMEOUT:
return put_user(timeout, uarg.i);