rtc: ds1374: wdt: Fix stop/start ioctl always returning -EINVAL

The WDIOC_SETOPTIONS case in the watchdog ioctl would alwayss falls
through to the -EINVAL case. This is wrong since thew watchdog does
actually get stopped or started correctly.

Fixes: 920f91e50c5b ("drivers/rtc/rtc-ds1374.c: add watchdog support")
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 2a8b5b3e429b..38a2e9e684df 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -546,14 +546,15 @@ static long ds1374_wdt_ioctl(struct file *file, unsigned int cmd,
                 if (options & WDIOS_DISABLECARD) {
                         pr_info("disable watchdog\n");
                         ds1374_wdt_disable();
+                        return 0;
                 }
 
                 if (options & WDIOS_ENABLECARD) {
                         pr_info("enable watchdog\n");
                         ds1374_wdt_settimeout(wdt_margin);
                         ds1374_wdt_ping();
+                        return 0;
                 }
-
                 return -EINVAL;
         }
         return -ENOTTY;