diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2010-11-15 21:57:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-16 23:02:00 +0100 |
| commit | 045cac6b3b067a9286dabfb789f67ae4f433f88b (patch) | |
| tree | b0cf5e7ce35503125a08a31b9ab8ce0a35868aa5 /drivers | |
| parent | USB: use the no_callbacks flag for interfaces (diff) | |
| download | linux-045cac6b3b067a9286dabfb789f67ae4f433f88b.tar.xz linux-045cac6b3b067a9286dabfb789f67ae4f433f88b.zip | |
USB: use sysfs_merge_group for power attributes
This patch (as1426) makes use of the new sysfs_merge_group() and
sysfs_unmerge_group() routines to simplify the handling of power
attributes for USB devices.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/core/sysfs.c | 50 |
1 files changed, 17 insertions, 33 deletions
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 448f5b47fc48..9561e087907d 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -233,8 +233,6 @@ static DEVICE_ATTR(urbnum, S_IRUGO, show_urbnum, NULL); #ifdef CONFIG_PM -static const char power_group[] = "power"; - static ssize_t show_persist(struct device *dev, struct device_attribute *attr, char *buf) { @@ -278,7 +276,7 @@ static int add_persist_attributes(struct device *dev) if (udev->descriptor.bDeviceClass != USB_CLASS_HUB) rc = sysfs_add_file_to_group(&dev->kobj, &dev_attr_persist.attr, - power_group); + power_group_name); } return rc; } @@ -287,7 +285,7 @@ static void remove_persist_attributes(struct device *dev) { sysfs_remove_file_from_group(&dev->kobj, &dev_attr_persist.attr, - power_group); + power_group_name); } #else @@ -438,44 +436,30 @@ set_level(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level); +static struct attribute *power_attrs[] = { + &dev_attr_autosuspend.attr, + &dev_attr_level.attr, + &dev_attr_connected_duration.attr, + &dev_attr_active_duration.attr, + NULL, +}; +static struct attribute_group power_attr_group = { + .name = power_group_name, + .attrs = power_attrs, +}; + static int add_power_attributes(struct device *dev) { int rc = 0; - if (is_usb_device(dev)) { - rc = sysfs_add_file_to_group(&dev->kobj, - &dev_attr_autosuspend.attr, - power_group); - if (rc == 0) - rc = sysfs_add_file_to_group(&dev->kobj, - &dev_attr_level.attr, - power_group); - if (rc == 0) - rc = sysfs_add_file_to_group(&dev->kobj, - &dev_attr_connected_duration.attr, - power_group); - if (rc == 0) - rc = sysfs_add_file_to_group(&dev->kobj, - &dev_attr_active_duration.attr, - power_group); - } + if (is_usb_device(dev)) + rc = sysfs_merge_group(&dev->kobj, &power_attr_group); return rc; } static void remove_power_attributes(struct device *dev) { - sysfs_remove_file_from_group(&dev->kobj, - &dev_attr_active_duration.attr, - power_group); - sysfs_remove_file_from_group(&dev->kobj, - &dev_attr_connected_duration.attr, - power_group); - sysfs_remove_file_from_group(&dev->kobj, - &dev_attr_level.attr, - power_group); - sysfs_remove_file_from_group(&dev->kobj, - &dev_attr_autosuspend.attr, - power_group); + sysfs_unmerge_group(&dev->kobj, &power_attr_group); } #else |