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i2c: always enable RuntimePM for the adapter device 

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>
This commit is contained in:
Wolfram Sang 2015-12-23 18:19:28 +01:00 committed by Wolfram Sang
parent 8d22f30938
commit 9f924169c0
1 changed files with 3 additions and 0 deletions
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3
drivers/i2c/i2c-core.c
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@ -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