}
static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
+/**
+ * store_remove_id - remove a USB device ID from this driver
+ * @driver: target device driver
+ * @buf: buffer for scanning device ID data
+ * @count: input size
+ *
+ * Removes a dynamic usb device ID from this driver.
+ */
+static ssize_t
+store_remove_id(struct device_driver *driver, const char *buf, size_t count)
+{
+ struct usb_dynid *dynid, *n;
+ struct usb_driver *usb_driver = to_usb_driver(driver);
+ u32 idVendor = 0;
+ u32 idProduct = 0;
+ int fields = 0;
+ int retval = 0;
+
+ fields = sscanf(buf, "%x %x", &idVendor, &idProduct);
+ if (fields < 2)
+ return -EINVAL;
+
+ spin_lock(&usb_driver->dynids.lock);
+ list_for_each_entry_safe(dynid, n, &usb_driver->dynids.list, node) {
+ struct usb_device_id *id = &dynid->id;
+ if ((id->idVendor == idVendor) &&
+ (id->idProduct == idProduct)) {
+ list_del(&dynid->node);
+ kfree(dynid);
+ retval = 0;
+ break;
+ }
+ }
+ spin_unlock(&usb_driver->dynids.lock);
+
+ if (retval)
+ return retval;
+ return count;
+}
+static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id);
+
static int usb_create_newid_file(struct usb_driver *usb_drv)
{
int error = 0;
&driver_attr_new_id);
}
+static int
+usb_create_removeid_file(struct usb_driver *drv)
+{
+ int error = 0;
+ if (drv->probe != NULL)
+ error = driver_create_file(&drv->drvwrap.driver,
+ &driver_attr_remove_id);
+ return error;
+}
+
+static void usb_remove_removeid_file(struct usb_driver *drv)
+{
+ driver_remove_file(&drv->drvwrap.driver, &driver_attr_remove_id);
+}
+
static void usb_free_dynids(struct usb_driver *usb_drv)
{
struct usb_dynid *dynid, *n;
{
}
+static int
+usb_create_removeid_file(struct usb_driver *drv)
+{
+ return 0;
+}
+
+static void usb_remove_removeid_file(struct usb_driver *drv)
+{
+}
+
static inline void usb_free_dynids(struct usb_driver *usb_drv)
{
}
INIT_LIST_HEAD(&new_driver->dynids.list);
retval = driver_register(&new_driver->drvwrap.driver);
+ if (retval)
+ goto out;
- if (!retval) {
- pr_info("%s: registered new interface driver %s\n",
+ usbfs_update_special();
+
+ retval = usb_create_newid_file(new_driver);
+ if (retval)
+ goto out_newid;
+
+ retval = usb_create_removeid_file(new_driver);
+ if (retval)
+ goto out_removeid;
+
+ pr_info("%s: registered new interface driver %s\n",
usbcore_name, new_driver->name);
- usbfs_update_special();
- usb_create_newid_file(new_driver);
- } else {
- printk(KERN_ERR "%s: error %d registering interface "
- " driver %s\n",
- usbcore_name, retval, new_driver->name);
- }
+out:
return retval;
+
+out_removeid:
+ usb_remove_newid_file(new_driver);
+out_newid:
+ driver_unregister(&new_driver->drvwrap.driver);
+
+ printk(KERN_ERR "%s: error %d registering interface "
+ " driver %s\n",
+ usbcore_name, retval, new_driver->name);
+ goto out;
}
EXPORT_SYMBOL_GPL(usb_register_driver);
pr_info("%s: deregistering interface driver %s\n",
usbcore_name, driver->name);
+ usb_remove_removeid_file(driver);
usb_remove_newid_file(driver);
usb_free_dynids(driver);
driver_unregister(&driver->drvwrap.driver);
done:
dev_vdbg(&udev->dev, "%s: status %d\n", __func__, status);
- if (status == 0)
- udev->autoresume_disabled = 0;
return status;
}
/* Propagate the resume up the tree, if necessary */
if (udev->state == USB_STATE_SUSPENDED) {
- if ((msg.event & PM_EVENT_AUTO) &&
- udev->autoresume_disabled) {
- status = -EPERM;
- goto done;
- }
if (parent) {
status = usb_autoresume_device(parent);
if (status == 0) {
int status = 0;
usb_pm_lock(udev);
- udev->auto_pm = 1;
udev->pm_usage_cnt += inc_usage_cnt;
WARN_ON(udev->pm_usage_cnt < 0);
if (inc_usage_cnt)
if (intf->condition == USB_INTERFACE_UNBOUND)
status = -ENODEV;
else {
- udev->auto_pm = 1;
atomic_add(inc_usage_cnt, &intf->pm_usage_cnt);
udev->last_busy = jiffies;
if (inc_usage_cnt >= 0 &&
if (intf->condition == USB_INTERFACE_UNBOUND)
status = -ENODEV;
- else if (udev->autoresume_disabled)
- status = -EPERM;
else {
atomic_inc(&intf->pm_usage_cnt);
if (atomic_read(&intf->pm_usage_cnt) > 0 &&
}
EXPORT_SYMBOL_GPL(usb_autopm_get_interface_async);
-/**
- * usb_autopm_set_interface - set a USB interface's autosuspend state
- * @intf: the usb_interface whose state should be set
- *
- * This routine sets the autosuspend state of @intf's device according
- * to @intf's usage counter, which the caller must have set previously.
- * If the counter is <= 0, the device is autosuspended (if it isn't
- * already suspended and if nothing else prevents the autosuspend). If
- * the counter is > 0, the device is autoresumed (if it isn't already
- * awake).
- */
-int usb_autopm_set_interface(struct usb_interface *intf)
-{
- int status;
-
- status = usb_autopm_do_interface(intf, 0);
- dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
- __func__, status, atomic_read(&intf->pm_usage_cnt));
- return status;
-}
-EXPORT_SYMBOL_GPL(usb_autopm_set_interface);
-
#else
void usb_autosuspend_work(struct work_struct *work)
do_unbind_rebind(udev, DO_UNBIND);
usb_pm_lock(udev);
- udev->auto_pm = 0;
status = usb_suspend_both(udev, msg);
usb_pm_unlock(udev);
return status;
int status;
usb_pm_lock(udev);
- udev->auto_pm = 0;
status = usb_resume_both(udev, msg);
udev->last_busy = jiffies;
usb_pm_unlock(udev);
projects / linux-flexiantxendom0-3.2.10.git / blobdiff