linux-kernel - [PATCH] i2c-rk3x: move setup to the earlier subsys initcall

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Message-Id: <1411370675-27866-1-git-send-email-zyw@rock-chips.com>
Date:	Mon, 22 Sep 2014 15:24:35 +0800
From:	Chris Zhong <zyw@...k-chips.com>
To:	dianders@...omium.org, max.schwarz@...ine.de
Cc:	linux-rockchip@...ts.infradead.org,
	Chris Zhong <zyw@...k-chips.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Wolfram Sang <wsa@...-dreams.de>,
	linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] i2c-rk3x: move setup to the earlier subsys initcall

Some device using this bus, such as regulators, they should register
as early as possible, so the I2C bus master needs to be loaded early.
Therefore initialize via subsys_initcall() is better.

Signed-off-by: Chris Zhong <zyw@...k-chips.com>

---

 drivers/i2c/busses/i2c-rk3x.c |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index e637c32..5b91901 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -760,7 +760,18 @@ static struct platform_driver rk3x_i2c_driver = {
 	},
 };
 
-module_platform_driver(rk3x_i2c_driver);
+static int __init rk3x_i2c_init_driver(void)
+{
+	return platform_driver_register(&rk3x_i2c_driver);
+}
+
+static void __exit rk3x_i2c_exit_driver(void)
+{
+	platform_driver_unregister(&rk3x_i2c_driver);
+}
+
+subsys_initcall(rk3x_i2c_init_driver);
+module_exit(rk3x_i2c_exit_driver);
 
 MODULE_DESCRIPTION("Rockchip RK3xxx I2C Bus driver");
 MODULE_AUTHOR("Max Schwarz <max.schwarz@...ine.de>");
-- 
1.7.9.5

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