watchdog: wdt285: Fix variable type

Variable "new_margin" is checked in the function watchdog_ioctl()
to be non-negative, so change its type to "int".

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/watchdog/wdt285.c b/drivers/watchdog/wdt285.c
index 7355ddd0b207..ebbb183be618 100644
--- a/drivers/watchdog/wdt285.c
+++ b/drivers/watchdog/wdt285.c
@@ -139,9 +139,8 @@ static const struct watchdog_info ident = {
 static long watchdog_ioctl(struct file *file, unsigned int cmd,
                            unsigned long arg)
 {
-        unsigned int new_margin;
         int __user *int_arg = (int __user *)arg;
-        int ret = -ENOTTY;
+        int new_margin, ret = -ENOTTY;
 
         switch (cmd) {
         case WDIOC_GETSUPPORT: