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path: root/drivers/watchdog/watchdog_core.c
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Diffstat (limited to 'drivers/watchdog/watchdog_core.c')
-rw-r--r--drivers/watchdog/watchdog_core.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
index 47fc1267ad4e..cfa1a1518aad 100644
--- a/drivers/watchdog/watchdog_core.c
+++ b/drivers/watchdog/watchdog_core.c
@@ -59,6 +59,16 @@ int watchdog_register_device(struct watchdog_device *wdd)
return -EINVAL;
/*
+ * Check that we have valid min and max timeout values, if
+ * not reset them both to 0 (=not used or unknown)
+ */
+ if (wdd->min_timeout > wdd->max_timeout) {
+ pr_info("Invalid min and max timeout values, resetting to 0!\n");
+ wdd->min_timeout = 0;
+ wdd->max_timeout = 0;
+ }
+
+ /*
* Note: now that all watchdog_device data has been verified, we
* will not check this anymore in other functions. If data gets
* corrupted in a later stage then we expect a kernel panic!