linux-kernel - [PATCH 3/3] i2c: enable async suspend/resume on i2c client devices

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Date:   Mon, 25 Oct 2021 14:35:31 -0700
From:   Rajat Jain <rajatja@...gle.com>
To:     Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Wolfram Sang <wsa@...nel.org>, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        dtor@...gle.com
Cc:     Derek Basehore <dbasehore@...omium.org>, rajatxjain@...il.com,
        Rajat Jain <rajatja@...gle.com>
Subject: [PATCH 3/3] i2c: enable async suspend/resume on i2c client devices

From: Derek Basehore <dbasehore@...omium.org>

This enables the async suspend for i2c client devices. This reduces
the suspend/resume time considerably on platforms where i2c devices
can take a lot of time (hundreds of ms) to resume.

Signed-off-by: Derek Basehore <dbasehore@...omium.org>
Signed-off-by: Rajat Jain <rajatja@...gle.com>
Tested-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
---
v2: Add Jarkko's tested by

 drivers/i2c/i2c-core-base.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index 8d4f2be54e17..70d32efb68ef 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -1047,6 +1047,7 @@ i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *inf
 	client->dev.of_node = of_node_get(info->of_node);
 	client->dev.fwnode = info->fwnode;
 
+	device_enable_async_suspend(&client->dev);
 	i2c_dev_set_name(adap, client, info);
 
 	if (info->swnode) {
-- 
2.33.0.1079.g6e70778dc9-goog