From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> The adapter device is a logical device. Because of that, it already uses pm_runtime_no_callbacks() in the core. To ensure proper propagation from the children (i2c devices) to the parent of the adapter (the HW device), make sure RuntimePM is enabled in any case. Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> --- drivers/i2c/i2c-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index e94d2ca2aab4aa..55159e8e53283a 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1610,6 +1610,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap) dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name); pm_runtime_no_callbacks(&adap->dev); + pm_runtime_enable(&adap->dev); #ifdef CONFIG_I2C_COMPAT res = class_compat_create_link(i2c_adapter_compat_class, &adap->dev, @@ -1864,6 +1865,8 @@ void i2c_del_adapter(struct i2c_adapter *adap) /* device name is gone after device_unregister */ dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name); + pm_runtime_disable(&adap->dev); + /* wait until all references to the device are gone * * FIXME: This is old code and should ideally be replaced by an -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
