[PATCH 1/3] hwmon: (w83627ehf) Use platform_create_bundle

[W_Armin@xxxxxx]

From: Armin Wolf <W_Armin@xxxxxx>

Using platform_create_bundle() simplifies the module
init code and allows w83627ehf_probe() to be marked
as __init, lowering the runtime memory footprint.

Signed-off-by: Armin Wolf <W_Armin@xxxxxx>
---
 drivers/hwmon/w83627ehf.c | 57 +++++++--------------------------------
 1 file changed, 10 insertions(+), 47 deletions(-)

diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index 8618aaf32350..16aed90ca2ec 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -1694,7 +1694,7 @@ static const struct hwmon_chip_info w83627ehf_chip_info = {
 	.info = w83627ehf_info,
 };

-static int w83627ehf_probe(struct platform_device *pdev)
+static int __init w83627ehf_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
@@ -2057,7 +2057,6 @@ static struct platform_driver w83627ehf_driver = {
 		.name	= DRVNAME,
 		.pm	= W83627EHF_DEV_PM_OPS,
 	},
-	.probe		= w83627ehf_probe,
 	.remove		= w83627ehf_remove,
 };

@@ -2150,8 +2149,7 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
 /*
  * when Super-I/O functions move to a separate file, the Super-I/O
  * bus will manage the lifetime of the device and this module will only keep
- * track of the w83627ehf driver. But since we platform_device_alloc(), we
- * must keep track of the device
+ * track of the w83627ehf driver.
  */
 static struct platform_device *pdev;

@@ -2159,7 +2157,10 @@ static int __init sensors_w83627ehf_init(void)
 {
 	int err;
 	unsigned short address;
-	struct resource res;
+	struct resource res = {
+		.name	= DRVNAME,
+		.flags	= IORESOURCE_IO,
+	};
 	struct w83627ehf_sio_data sio_data;

 	/*
@@ -2173,55 +2174,17 @@ static int __init sensors_w83627ehf_init(void)
 	    w83627ehf_find(0x4e, &address, &sio_data))
 		return -ENODEV;

-	err = platform_driver_register(&w83627ehf_driver);
-	if (err)
-		goto exit;
-
-	pdev = platform_device_alloc(DRVNAME, address);
-	if (!pdev) {
-		err = -ENOMEM;
-		pr_err("Device allocation failed\n");
-		goto exit_unregister;
-	}
-
-	err = platform_device_add_data(pdev, &sio_data,
-				       sizeof(struct w83627ehf_sio_data));
-	if (err) {
-		pr_err("Platform data allocation failed\n");
-		goto exit_device_put;
-	}
-
-	memset(&res, 0, sizeof(res));
-	res.name = DRVNAME;
 	res.start = address + IOREGION_OFFSET;
 	res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
-	res.flags = IORESOURCE_IO;

 	err = acpi_check_resource_conflict(&res);
 	if (err)
-		goto exit_device_put;
+		return err;

-	err = platform_device_add_resources(pdev, &res, 1);
-	if (err) {
-		pr_err("Device resource addition failed (%d)\n", err);
-		goto exit_device_put;
-	}
+	pdev = platform_create_bundle(&w83627ehf_driver, w83627ehf_probe, &res, 1, &sio_data,
+				      sizeof(struct w83627ehf_sio_data));

-	/* platform_device_add calls probe() */
-	err = platform_device_add(pdev);
-	if (err) {
-		pr_err("Device addition failed (%d)\n", err);
-		goto exit_device_put;
-	}
-
-	return 0;
-
-exit_device_put:
-	platform_device_put(pdev);
-exit_unregister:
-	platform_driver_unregister(&w83627ehf_driver);
-exit:
-	return err;
+	return PTR_ERR_OR_ZERO(pdev);
 }

 static void __exit sensors_w83627ehf_exit(void)
--
2.20.1