From 8dd1fe1594a712eb326e1607c694fbd1baf85f4b Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Fri, 16 Sep 2016 18:02:42 +0200 Subject: i2c: export i2c_adapter_depth() For crazy setups in which an i2c gpio expander is behind an i2c gpio multiplexer controlled by a gpio provided a second expander using the same device driver we need to explicitly tell lockdep how to handle nested locking. Export i2c_adapter_depth() as public API to be reused outside of i2c core code. Signed-off-by: Bartosz Golaszewski Acked-by: Peter Rosin Acked-by: Peter Zijlstra (Intel) Signed-off-by: Wolfram Sang --- include/linux/i2c.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/i2c.h') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 4a4099d3a4b9..6422eef428c4 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -698,6 +698,7 @@ extern void i2c_clients_command(struct i2c_adapter *adap, extern struct i2c_adapter *i2c_get_adapter(int nr); extern void i2c_put_adapter(struct i2c_adapter *adap); +extern unsigned int i2c_adapter_depth(struct i2c_adapter *adapter); void i2c_parse_fw_timings(struct device *dev, struct i2c_timings *t, bool use_defaults); -- cgit v1.2.3