diff options
Diffstat (limited to 'drivers/watchdog/imxwd.c')
| -rw-r--r-- | drivers/watchdog/imxwd.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/watchdog/imxwd.c b/drivers/watchdog/imxwd.c index dd11a62613..1952548fa7 100644 --- a/drivers/watchdog/imxwd.c +++ b/drivers/watchdog/imxwd.c @@ -97,9 +97,12 @@ static int imx21_watchdog_set_timeout(struct imx_wd *priv, int timeout) dev_dbg(priv->dev, "%s: %d\n", __func__, timeout); - if (!timeout || timeout > 128) + if (timeout < -1 || timeout > 128) return -EINVAL; + if (timeout == 0) /* bit 2 (WDE) cannot be set to 0 again */ + return -ENOSYS; + if (timeout > 0) val = ((timeout * 2 - 1) << 8) | IMX21_WDOG_WCR_SRS | IMX21_WDOG_WCR_WDA; |