[PATCH v2] i2c: enable i2c device to suspend/resume asynchronously

[Fu, Zhonghui]

Now, PM core supports asynchronous suspend/resume mode for devices
during system suspend/resume, and the power state transition of one
device may be completed in separate kernel thread. PM core ensures
all power state transition timing dependency between devices. This
patch enables i2c device to suspend/resume asynchronously. This will
take advantage of multicore and improve system suspend/resume speed.

Signed-off-by: Zhonghui Fu <zhonghui.fu@xxxxxxxxxxxxxxx>
---
Changes in v2:
- Amend commit message.

 drivers/i2c/i2c-core.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 5f89f1e..74e322b 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1036,6 +1036,7 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
 	client->dev.of_node = info->of_node;
 	client->dev.fwnode = info->fwnode;
 
+	device_enable_async_suspend(&client->dev);
 	i2c_dev_set_name(adap, client);
 	status = device_register(&client->dev);
 	if (status)
-- 1.7.1

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