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path: root/drivers/hwmon/applesmc.c
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Diffstat (limited to 'drivers/hwmon/applesmc.c')
-rw-r--r--drivers/hwmon/applesmc.c61
1 files changed, 25 insertions, 36 deletions
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index 0f28d91f29d..f085c18d290 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -195,6 +195,9 @@ static unsigned int applesmc_accelerometer;
/* Indicates whether this computer has light sensors and keyboard backlight. */
static unsigned int applesmc_light;
+/* The number of fans handled by the driver */
+static unsigned int fans_handled;
+
/* Indicates which temperature sensors set to use. */
static unsigned int applesmc_temperature_set;
@@ -1492,39 +1495,24 @@ static int __init applesmc_init(void)
/* create fan files */
count = applesmc_get_fan_count();
- if (count < 0) {
+ if (count < 0)
printk(KERN_ERR "applesmc: Cannot get the number of fans.\n");
- } else {
+ else
printk(KERN_INFO "applesmc: %d fans found.\n", count);
- switch (count) {
- default:
- printk(KERN_WARNING "applesmc: More than 4 fans found,"
- " but at most 4 fans are supported"
- " by the driver.\n");
- case 4:
- ret = sysfs_create_group(&pdev->dev.kobj,
- &fan_attribute_groups[3]);
- if (ret)
- goto out_key_enumeration;
- case 3:
- ret = sysfs_create_group(&pdev->dev.kobj,
- &fan_attribute_groups[2]);
- if (ret)
- goto out_key_enumeration;
- case 2:
- ret = sysfs_create_group(&pdev->dev.kobj,
- &fan_attribute_groups[1]);
- if (ret)
- goto out_key_enumeration;
- case 1:
- ret = sysfs_create_group(&pdev->dev.kobj,
- &fan_attribute_groups[0]);
- if (ret)
- goto out_fan_1;
- case 0:
- ;
- }
+ if (count > 4) {
+ count = 4;
+ printk(KERN_WARNING "applesmc: More than 4 fans found,"
+ " but at most 4 fans are supported"
+ " by the driver.\n");
+ }
+
+ while (fans_handled < count) {
+ ret = sysfs_create_group(&pdev->dev.kobj,
+ &fan_attribute_groups[fans_handled]);
+ if (ret)
+ goto out_fans;
+ fans_handled++;
}
for (i = 0;
@@ -1593,10 +1581,10 @@ out_accelerometer:
applesmc_release_accelerometer();
out_temperature:
sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
- sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
-out_fan_1:
- sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
-out_key_enumeration:
+out_fans:
+ while (fans_handled)
+ sysfs_remove_group(&pdev->dev.kobj,
+ &fan_attribute_groups[--fans_handled]);
sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
out_name:
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
@@ -1622,8 +1610,9 @@ static void __exit applesmc_exit(void)
if (applesmc_accelerometer)
applesmc_release_accelerometer();
sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
- sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
- sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
+ while (fans_handled)
+ sysfs_remove_group(&pdev->dev.kobj,
+ &fan_attribute_groups[--fans_handled]);
sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
platform_device_unregister(pdev);