watchdog: wdt285: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

Fix the following warning (Building: footbridge_defconfig arm):

drivers/watchdog/wdt285.c: In function ‘watchdog_ioctl’:
drivers/watchdog/wdt285.c:170:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
   watchdog_ping();
   ^~~~~~~~~~~~~~~
drivers/watchdog/wdt285.c:172:2: note: here
  case WDIOC_GETTIMEOUT:
  ^~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

diff --git a/drivers/watchdog/wdt285.c b/drivers/watchdog/wdt285.c
index 4eacfb1..eb729d7 100644 (file)
--- a/drivers/watchdog/wdt285.c
+++ b/drivers/watchdog/wdt285.c
@@ -168,7 +168,7 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd,
                soft_margin = new_margin;
                reload = soft_margin * (mem_fclk_21285 / 256);
                watchdog_ping();
-               /* Fall */
+               /* Fall through */
        case WDIOC_GETTIMEOUT:
                ret = put_user(soft_margin, int_arg);
                break;