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hwmon: (smsc47m1) Convert to use devm_ functions 

Convert to use devm_ functions to reduce code size and simplify the code.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2012-06-02 12:04:07 -07:00
parent e43d5fefa7
commit 08ad7c9522
1 changed files with 11 additions and 34 deletions
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45
drivers/hwmon/smsc47m1.c
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@ -584,18 +584,17 @@ static void smsc47m1_restore(const struct smsc47m1_sio_data *sio_data)
#define CHECK 1
#define REQUEST 2
#define RELEASE 3
/*
* This function can be used to:
* - test for resource conflicts with ACPI
* - request the resources
* - release the resources
* We only allocate the I/O ports we really need, to minimize the risk of
* conflicts with ACPI or with other drivers.
*/
static int smsc47m1_handle_resources(unsigned short address, enum chips type,
int action, struct device *dev)
static int __init smsc47m1_handle_resources(unsigned short address,
enum chips type, int action,
struct device *dev)
{
static const u8 ports_m1[] = {
/* register, region length */
@ -642,21 +641,13 @@ static int smsc47m1_handle_resources(unsigned short address, enum chips type,
break;
case REQUEST:
/* Request the resources */
if (!request_region(start, len, DRVNAME)) {
dev_err(dev, "Region 0x%hx-0x%hx already in "
"use!\n", start, start + len);
/* Undo all requests */
for (i -= 2; i >= 0; i -= 2)
release_region(address + ports[i],
ports[i + 1]);
if (!devm_request_region(dev, start, len, DRVNAME)) {
dev_err(dev,
"Region 0x%hx-0x%hx already in use!\n",
start, start + len);
return -EBUSY;
}
break;
case RELEASE:
/* Release the resources */
release_region(start, len);
break;
}
}
@ -694,11 +685,9 @@ static int __init smsc47m1_probe(struct platform_device *pdev)
if (err < 0)
return err;
data = kzalloc(sizeof(struct smsc47m1_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto error_release;
}
data = devm_kzalloc(dev, sizeof(struct smsc47m1_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->addr = res->start;
data->type = sio_data->type;
@ -733,8 +722,7 @@ static int __init smsc47m1_probe(struct platform_device *pdev)
}
if (!(fan1 || fan2 || fan3 || pwm1 || pwm2 || pwm3)) {
dev_warn(dev, "Device not configured, will not use\n");
err = -ENODEV;
goto error_free;
return -ENODEV;
}
/*
@ -810,27 +798,16 @@ static int __init smsc47m1_probe(struct platform_device *pdev)
error_remove_files:
smsc47m1_remove_files(dev);
error_free:
platform_set_drvdata(pdev, NULL);
kfree(data);
error_release:
smsc47m1_handle_resources(res->start, sio_data->type, RELEASE, dev);
return err;
}
static int __exit smsc47m1_remove(struct platform_device *pdev)
{
struct smsc47m1_data *data = platform_get_drvdata(pdev);
struct resource *res;
hwmon_device_unregister(data->hwmon_dev);
smsc47m1_remove_files(&pdev->dev);
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
smsc47m1_handle_resources(res->start, data->type, RELEASE, &pdev->dev);
platform_set_drvdata(pdev, NULL);
kfree(data);
return 0;
}