i2c: i2c-imx: replace platform_driver_probe to support deferred probing

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-imx.c

@@ -365,7 +365,7 @@ static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx)
 	clk_disable_unprepare(i2c_imx->clk);
 }
 
-static void __init i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx,
+static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx,
 							unsigned int rate)
 {
 	struct imx_i2c_clk_pair *i2c_clk_div = i2c_imx->hwdata->clk_div;
@@ -589,7 +589,7 @@ static struct i2c_algorithm i2c_imx_algo = {
 	.functionality	= i2c_imx_func,
 };
 
-static int __init i2c_imx_probe(struct platform_device *pdev)
+static int i2c_imx_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *of_id = of_match_device(i2c_imx_dt_ids,
 							   &pdev->dev);
@@ -697,7 +697,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
 	return 0;   /* Return OK */
 }
 
-static int __exit i2c_imx_remove(struct platform_device *pdev)
+static int i2c_imx_remove(struct platform_device *pdev)
 {
 	struct imx_i2c_struct *i2c_imx = platform_get_drvdata(pdev);
 
@@ -715,7 +715,8 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
 }
 
 static struct platform_driver i2c_imx_driver = {
-	.remove		= __exit_p(i2c_imx_remove),
+	.probe = i2c_imx_probe,
+	.remove = i2c_imx_remove,
 	.driver	= {
 		.name	= DRIVER_NAME,
 		.owner	= THIS_MODULE,
@@ -726,7 +727,7 @@ static struct platform_driver i2c_imx_driver = {
 
 static int __init i2c_adap_imx_init(void)
 {
-	return platform_driver_probe(&i2c_imx_driver, i2c_imx_probe);
+	return platform_driver_register(&i2c_imx_driver);
 }
 subsys_initcall(i2c_adap_imx_init);