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authorGuenter Roeck <linux@roeck-us.net>2012-06-02 20:58:07 +0400
committerGuenter Roeck <linux@roeck-us.net>2012-07-22 08:48:41 +0400
commitd00985f3dd5339eb3068e53f5704ae007ee62f90 (patch)
treee79d6d48e09bf3dad32e091eff6c49161c224817 /drivers/hwmon/gpio-fan.c
parent60c2b5697560b0216ddbebaabebd1aac7abe3012 (diff)
downloadlinux-d00985f3dd5339eb3068e53f5704ae007ee62f90.tar.xz
hwmon: (gpio-fan) Convert to use devm_ functions
Convert to use devm_ functions to reduce code size and simplify the code. Cc: Simon Guinot <sguinot@lacie.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Simon Guinot <sguinot@lacie.com>
Diffstat (limited to 'drivers/hwmon/gpio-fan.c')
-rw-r--r--drivers/hwmon/gpio-fan.c56
1 files changed, 15 insertions, 41 deletions
diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
index 2ce8c44a0e07..b90b3e9617b0 100644
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -95,17 +95,17 @@ static int fan_alarm_init(struct gpio_fan_data *fan_data,
fan_data->alarm = alarm;
- err = gpio_request(alarm->gpio, "GPIO fan alarm");
+ err = devm_gpio_request(&pdev->dev, alarm->gpio, "GPIO fan alarm");
if (err)
return err;
err = gpio_direction_input(alarm->gpio);
if (err)
- goto err_free_gpio;
+ return err;
err = device_create_file(&pdev->dev, &dev_attr_fan1_alarm);
if (err)
- goto err_free_gpio;
+ return err;
/*
* If the alarm GPIO don't support interrupts, just leave
@@ -117,8 +117,8 @@ static int fan_alarm_init(struct gpio_fan_data *fan_data,
INIT_WORK(&fan_data->alarm_work, fan_alarm_notify);
irq_set_irq_type(alarm_irq, IRQ_TYPE_EDGE_BOTH);
- err = request_irq(alarm_irq, fan_alarm_irq_handler, IRQF_SHARED,
- "GPIO fan alarm", fan_data);
+ err = devm_request_irq(&pdev->dev, alarm_irq, fan_alarm_irq_handler,
+ IRQF_SHARED, "GPIO fan alarm", fan_data);
if (err)
goto err_free_sysfs;
@@ -126,21 +126,14 @@ static int fan_alarm_init(struct gpio_fan_data *fan_data,
err_free_sysfs:
device_remove_file(&pdev->dev, &dev_attr_fan1_alarm);
-err_free_gpio:
- gpio_free(alarm->gpio);
-
return err;
}
static void fan_alarm_free(struct gpio_fan_data *fan_data)
{
struct platform_device *pdev = fan_data->pdev;
- int alarm_irq = gpio_to_irq(fan_data->alarm->gpio);
- if (alarm_irq >= 0)
- free_irq(alarm_irq, fan_data);
device_remove_file(&pdev->dev, &dev_attr_fan1_alarm);
- gpio_free(fan_data->alarm->gpio);
}
/*
@@ -365,15 +358,14 @@ static int fan_ctrl_init(struct gpio_fan_data *fan_data,
int i, err;
for (i = 0; i < num_ctrl; i++) {
- err = gpio_request(ctrl[i], "GPIO fan control");
+ err = devm_gpio_request(&pdev->dev, ctrl[i],
+ "GPIO fan control");
if (err)
- goto err_free_gpio;
+ return err;
err = gpio_direction_output(ctrl[i], gpio_get_value(ctrl[i]));
- if (err) {
- gpio_free(ctrl[i]);
- goto err_free_gpio;
- }
+ if (err)
+ return err;
}
fan_data->num_ctrl = num_ctrl;
@@ -382,32 +374,18 @@ static int fan_ctrl_init(struct gpio_fan_data *fan_data,
fan_data->speed = pdata->speed;
fan_data->pwm_enable = true; /* Enable manual fan speed control. */
fan_data->speed_index = get_fan_speed_index(fan_data);
- if (fan_data->speed_index < 0) {
- err = -ENODEV;
- goto err_free_gpio;
- }
+ if (fan_data->speed_index < 0)
+ return -ENODEV;
err = sysfs_create_group(&pdev->dev.kobj, &gpio_fan_ctrl_group);
- if (err)
- goto err_free_gpio;
-
- return 0;
-
-err_free_gpio:
- for (i = i - 1; i >= 0; i--)
- gpio_free(ctrl[i]);
-
return err;
}
static void fan_ctrl_free(struct gpio_fan_data *fan_data)
{
struct platform_device *pdev = fan_data->pdev;
- int i;
sysfs_remove_group(&pdev->dev.kobj, &gpio_fan_ctrl_group);
- for (i = 0; i < fan_data->num_ctrl; i++)
- gpio_free(fan_data->ctrl[i]);
}
/*
@@ -431,7 +409,8 @@ static int __devinit gpio_fan_probe(struct platform_device *pdev)
if (!pdata)
return -EINVAL;
- fan_data = kzalloc(sizeof(struct gpio_fan_data), GFP_KERNEL);
+ fan_data = devm_kzalloc(&pdev->dev, sizeof(struct gpio_fan_data),
+ GFP_KERNEL);
if (!fan_data)
return -ENOMEM;
@@ -443,7 +422,7 @@ static int __devinit gpio_fan_probe(struct platform_device *pdev)
if (pdata->alarm) {
err = fan_alarm_init(fan_data, pdata->alarm);
if (err)
- goto err_free_data;
+ return err;
}
/* Configure control GPIOs if available. */
@@ -480,10 +459,6 @@ err_free_ctrl:
err_free_alarm:
if (fan_data->alarm)
fan_alarm_free(fan_data);
-err_free_data:
- platform_set_drvdata(pdev, NULL);
- kfree(fan_data);
-
return err;
}
@@ -497,7 +472,6 @@ static int __devexit gpio_fan_remove(struct platform_device *pdev)
fan_alarm_free(fan_data);
if (fan_data->ctrl)
fan_ctrl_free(fan_data);
- kfree(fan_data);
return 0;
}