linux-kernel - [PATCH] i2c: enable i2c adapter to suspend/resume asynchronously

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Date:	Tue, 18 Aug 2015 00:17:29 +0800
From:	"Fu, Zhonghui" <zhonghui.fu@...ux.intel.com>
To:	wsa@...-dreams.de
CC:	linux-i2c@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] i2c: enable i2c adapter to suspend/resume asynchronously

Enable i2c adapter to suspend/resume asynchronously. This can improve
system suspend/resume speed.

Signed-off-by: Zhonghui Fu <zhonghui.fu@...ux.intel.com>
---
 drivers/i2c/i2c-core.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index c83e4d1..90251be 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1439,6 +1439,8 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
 
 	pm_runtime_no_callbacks(&adap->dev);
 
+	device_enable_async_suspend(&adap->dev);
+
 #ifdef CONFIG_I2C_COMPAT
 	res = class_compat_create_link(i2c_adapter_compat_class, &adap->dev,
 				       adap->dev.parent);
-- 1.7.1

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