i2c: always enable RuntimePM for the adapter device (9f924169) · Commits · 戴 / test

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@sang-engineering.com> Signed-off-by:

Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/i2c-core.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1564,6 +1564,7 @@ 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,
		@@ -1818,6 +1819,8 @@ 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

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