Commit d320ec7a authored by Rajat Jain's avatar Rajat Jain Committed by Wolfram Sang
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i2c: enable async suspend/resume for i2c adapters 



Enable async suspend/resume of i2c adapters. It enormously helps with
reducing the resume time of systems (as much as 20%-40%) where I2C devices
can take significant time (100s of ms) to resume.

Signed-off-by: default avatarRajat Jain <rajatja@google.com>
Tested-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent 7c5b3c15

drivers/i2c/i2c-core-base.c

+1 −0
Original line number Diff line number Diff line
@@ -1577,6 +1577,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap) 
	if (res)

		goto out_reg;



	device_enable_async_suspend(&adap->dev);

	pm_runtime_no_callbacks(&adap->dev);

	pm_suspend_ignore_children(&adap->dev, true);

	pm_runtime_enable(&adap->dev);