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authorWolfram Sang <wsa+renesas@sang-engineering.com>2015-12-23 20:19:28 +0300
committerWolfram Sang <wsa@the-dreams.de>2016-01-10 11:27:06 +0300
commit9f924169c0358f630f9b6d26bb3de97360d8647b (patch)
tree8666344570e5a32f5df8621ea24a445c99074223 /drivers/i2c
parent8d22f309384cc410da91543f1eb30fe5daf91c3b (diff)
downloadlinux-9f924169c0358f630f9b6d26bb3de97360d8647b.tar.xz
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>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/i2c-core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 7349b00f4101..ffe715d346d8 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -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