diff options
| -rw-r--r-- | drivers/i2c/i2c-core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 981de21ab814..98fffa3a09f7 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1433,6 +1433,9 @@ unsigned int i2c_adapter_depth(struct i2c_adapter *adapter) while ((adapter = i2c_parent_is_i2c_adapter(adapter))) depth++; + WARN_ONCE(depth >= MAX_LOCKDEP_SUBCLASSES, + "adapter depth exceeds lockdep subclass limit\n"); + return depth; } EXPORT_SYMBOL_GPL(i2c_adapter_depth); |