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authorAlex Chiang <achiang@hp.com>2009-10-19 15:14:24 -0600
committerLen Brown <len.brown@intel.com>2009-11-03 15:57:13 -0500
commit5f46c2f25cfbb5faca7550738ac42c4d1491ddc8 (patch)
treebace354f58682fe00a60625c0311bfa528cbbb4d /drivers/acpi/dock.c
parent012abeea669ea49636cf952d13298bb68654146a (diff)
downloadblackbird-op-linux-5f46c2f25cfbb5faca7550738ac42c4d1491ddc8.tar.gz
blackbird-op-linux-5f46c2f25cfbb5faca7550738ac42c4d1491ddc8.zip
ACPI: dock: convert sysfs attributes to an attribute_group
As suggested by Dmitry Torokhov, convert the individual sysfs attributes into an attribute group. This change eliminates quite a bit of copy/paste code in the error handling paths. Signed-off-by: Alex Chiang <achiang@hp.com> Reviewed-by: Dmitry Torokhov <dtor@mail.ru> Acked-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/dock.c')
-rw-r--r--drivers/acpi/dock.c81
1 files changed, 24 insertions, 57 deletions
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 7338b6a3e049..4f2aa98e2cee 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -936,6 +936,19 @@ static ssize_t show_dock_type(struct device *dev,
}
static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL);
+static struct attribute *dock_attributes[] = {
+ &dev_attr_docked.attr,
+ &dev_attr_flags.attr,
+ &dev_attr_undock.attr,
+ &dev_attr_uid.attr,
+ &dev_attr_type.attr,
+ NULL
+};
+
+static struct attribute_group dock_attribute_group = {
+ .attrs = dock_attributes
+};
+
/**
* dock_add - add a new dock station
* @handle: the dock station handle
@@ -969,9 +982,8 @@ static int dock_add(acpi_handle handle)
dock_station_count, NULL, 0);
dock_device = dock_station->dock_device;
if (IS_ERR(dock_device)) {
- kfree(dock_station);
- dock_station = NULL;
- return PTR_ERR(dock_device);
+ ret = PTR_ERR(dock_device);
+ goto out;
}
platform_device_add_data(dock_device, &dock_station,
sizeof(struct dock_station *));
@@ -986,47 +998,9 @@ static int dock_add(acpi_handle handle)
if (is_battery(handle))
dock_station->flags |= DOCK_IS_BAT;
- ret = device_create_file(&dock_device->dev, &dev_attr_docked);
- if (ret) {
- printk(KERN_ERR "Error %d adding sysfs file\n", ret);
- platform_device_unregister(dock_device);
- kfree(dock_station);
- dock_station = NULL;
- return ret;
- }
- ret = device_create_file(&dock_device->dev, &dev_attr_undock);
- if (ret) {
- printk(KERN_ERR "Error %d adding sysfs file\n", ret);
- device_remove_file(&dock_device->dev, &dev_attr_docked);
- platform_device_unregister(dock_device);
- kfree(dock_station);
- dock_station = NULL;
- return ret;
- }
- ret = device_create_file(&dock_device->dev, &dev_attr_uid);
- if (ret) {
- printk(KERN_ERR "Error %d adding sysfs file\n", ret);
- device_remove_file(&dock_device->dev, &dev_attr_docked);
- device_remove_file(&dock_device->dev, &dev_attr_undock);
- platform_device_unregister(dock_device);
- kfree(dock_station);
- dock_station = NULL;
- return ret;
- }
- ret = device_create_file(&dock_device->dev, &dev_attr_flags);
- if (ret) {
- printk(KERN_ERR "Error %d adding sysfs file\n", ret);
- device_remove_file(&dock_device->dev, &dev_attr_docked);
- device_remove_file(&dock_device->dev, &dev_attr_undock);
- device_remove_file(&dock_device->dev, &dev_attr_uid);
- platform_device_unregister(dock_device);
- kfree(dock_station);
- dock_station = NULL;
- return ret;
- }
- ret = device_create_file(&dock_device->dev, &dev_attr_type);
+ ret = sysfs_create_group(&dock_device->dev.kobj, &dock_attribute_group);
if (ret)
- printk(KERN_ERR"Error %d adding sysfs file\n", ret);
+ goto err_unregister;
/* Find dependent devices */
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
@@ -1036,10 +1010,8 @@ static int dock_add(acpi_handle handle)
/* add the dock station as a device dependent on itself */
dd = alloc_dock_dependent_device(handle);
if (!dd) {
- kfree(dock_station);
- dock_station = NULL;
ret = -ENOMEM;
- goto dock_add_err_unregister;
+ goto err_rmgroup;
}
add_dock_dependent_device(dock_station, dd);
@@ -1047,15 +1019,14 @@ static int dock_add(acpi_handle handle)
list_add(&dock_station->sibling, &dock_stations);
return 0;
-dock_add_err_unregister:
- device_remove_file(&dock_device->dev, &dev_attr_type);
- device_remove_file(&dock_device->dev, &dev_attr_docked);
- device_remove_file(&dock_device->dev, &dev_attr_undock);
- device_remove_file(&dock_device->dev, &dev_attr_uid);
- device_remove_file(&dock_device->dev, &dev_attr_flags);
+err_rmgroup:
+ sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group);
+err_unregister:
platform_device_unregister(dock_device);
+out:
kfree(dock_station);
dock_station = NULL;
+ printk(KERN_ERR "%s encountered error %d\n", __func__, ret);
return ret;
}
@@ -1076,11 +1047,7 @@ static int dock_remove(struct dock_station *dock_station)
kfree(dd);
/* cleanup sysfs */
- device_remove_file(&dock_device->dev, &dev_attr_type);
- device_remove_file(&dock_device->dev, &dev_attr_docked);
- device_remove_file(&dock_device->dev, &dev_attr_undock);
- device_remove_file(&dock_device->dev, &dev_attr_uid);
- device_remove_file(&dock_device->dev, &dev_attr_flags);
+ sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group);
platform_device_unregister(dock_device);
/* free dock station memory */
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