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watchdog: sc1200: Mark expected switch fall-through

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

This patch fixes the following warning:

drivers/watchdog/sc1200wdt.c: In function ‘sc1200wdt_ioctl’:
drivers/watchdog/sc1200wdt.c:241:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
   sc1200wdt_write_data(WDTO, timeout);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/sc1200wdt.c:244:2: 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>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
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 2019-02-14 14:20:08 -06:00 committed by Wim Van Sebroeck
parent 8baee57218
commit 51c802f57a
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/sc1200wdt.c
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@ -239,7 +239,7 @@ static long sc1200wdt_ioctl(struct file *file, unsigned int cmd,
return -EINVAL;
timeout = new_timeout;
sc1200wdt_write_data(WDTO, timeout);
/* fall through and return the new timeout */
/* fall through - and return the new timeout */
case WDIOC_GETTIMEOUT:
return put_user(timeout * 60, p);