lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

USB: remove CONFIG_USB_PERSIST setting

Browse Source 
This patch (as1047) removes the USB_PERSIST Kconfig option, enabling
it permanently.  It also prevents the power/persist attribute from
being created for hub devices; there's no point in having it since
USB-PERSIST is always turned on for hubs.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2008-03-03 15:15:59 -05:00
committed by Greg Kroah-Hartman
parent 5e6effaed6
commit feccc30d90
7 changed files with 53 additions and 81 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/usb/core/sysfs.c
View File

@@ -180,11 +180,9 @@ show_urbnum(struct device *dev, struct device_attribute *attr, char *buf)
static DEVICE_ATTR(urbnum, S_IRUGO, show_urbnum, NULL);
#if defined(CONFIG_USB_PERSIST) || defined(CONFIG_USB_SUSPEND)
static const char power_group[] = "power";
#endif
#ifdef CONFIG_PM
#ifdef CONFIG_USB_PERSIST
static const char power_group[] = "power";
static ssize_t
show_persist(struct device *dev, struct device_attribute *attr, char *buf)
@@ -222,12 +220,13 @@ static int add_persist_attributes(struct device *dev)
if (is_usb_device(dev)) {
struct usb_device *udev = to_usb_device(dev);
/* Hubs are automatically enabled for USB_PERSIST */
if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
udev->persist_enabled = 1;
rc = sysfs_add_file_to_group(&dev->kobj,
&dev_attr_persist.attr,
power_group);
/* Hubs are automatically enabled for USB_PERSIST,
* no point in creating the attribute file.
*/
if (udev->descriptor.bDeviceClass != USB_CLASS_HUB)
rc = sysfs_add_file_to_group(&dev->kobj,
&dev_attr_persist.attr,
power_group);
}
return rc;
}
@@ -238,13 +237,12 @@ static void remove_persist_attributes(struct device *dev)
&dev_attr_persist.attr,
power_group);
}
#else
#define add_persist_attributes(dev) 0
#define remove_persist_attributes(dev) do {} while (0)
#endif /* CONFIG_USB_PERSIST */
#endif /* CONFIG_PM */
#ifdef CONFIG_USB_SUSPEND