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Diffstat (limited to 'include/linux/usb.h')
-rw-r--r--include/linux/usb.h35
1 files changed, 24 insertions, 11 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index d81b050e5955..827cc6de5f5c 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -225,7 +225,7 @@ struct usb_interface_cache {
* Device drivers should not attempt to activate configurations. The choice
* of which configuration to install is a policy decision based on such
* considerations as available power, functionality provided, and the user's
- * desires (expressed through hotplug scripts). However, drivers can call
+ * desires (expressed through userspace tools). However, drivers can call
* usb_reset_configuration() to reinitialize the current configuration and
* all its interfaces.
*/
@@ -329,8 +329,6 @@ struct usb_device {
struct usb_tt *tt; /* low/full speed dev, highspeed hub */
int ttport; /* device port on that tt hub */
- struct semaphore serialize;
-
unsigned int toggle[2]; /* one bit for each endpoint
* ([0] = IN, [1] = OUT) */
@@ -349,6 +347,9 @@ struct usb_device {
char **rawdescriptors; /* Raw descriptors for each config */
+ unsigned short bus_mA; /* Current available from the bus */
+ u8 portnum; /* Parent port number (origin 1) */
+
int have_langid; /* whether string_langid is valid */
int string_langid; /* language ID for strings */
@@ -377,11 +378,12 @@ struct usb_device {
extern struct usb_device *usb_get_dev(struct usb_device *dev);
extern void usb_put_dev(struct usb_device *dev);
-extern void usb_lock_device(struct usb_device *udev);
-extern int usb_trylock_device(struct usb_device *udev);
+/* USB device locking */
+#define usb_lock_device(udev) down(&(udev)->dev.sem)
+#define usb_unlock_device(udev) up(&(udev)->dev.sem)
+#define usb_trylock_device(udev) down_trylock(&(udev)->dev.sem)
extern int usb_lock_device_for_reset(struct usb_device *udev,
struct usb_interface *iface);
-extern void usb_unlock_device(struct usb_device *udev);
/* USB port reset for device reinitialization */
extern int usb_reset_device(struct usb_device *dev);
@@ -529,10 +531,13 @@ static inline int usb_make_path (struct usb_device *dev, char *buf,
/* ----------------------------------------------------------------------- */
+struct usb_dynids {
+ spinlock_t lock;
+ struct list_head list;
+};
+
/**
* struct usb_driver - identifies USB driver to usbcore
- * @owner: Pointer to the module owner of this driver; initialize
- * it using THIS_MODULE.
* @name: The driver name should be unique among USB drivers,
* and should normally be the same as the module name.
* @probe: Called to see if the driver is willing to manage a particular
@@ -553,7 +558,11 @@ static inline int usb_make_path (struct usb_device *dev, char *buf,
* @id_table: USB drivers use ID table to support hotplugging.
* Export this with MODULE_DEVICE_TABLE(usb,...). This must be set
* or your driver's probe function will never get called.
+ * @dynids: used internally to hold the list of dynamically added device
+ * ids for this driver.
* @driver: the driver model core driver structure.
+ * @no_dynamic_id: if set to 1, the USB core will not allow dynamic ids to be
+ * added to this driver by preventing the sysfs file from being created.
*
* USB drivers must provide a name, probe() and disconnect() methods,
* and an id_table. Other driver fields are optional.
@@ -571,8 +580,6 @@ static inline int usb_make_path (struct usb_device *dev, char *buf,
* them as necessary, and blocking until the unlinks complete).
*/
struct usb_driver {
- struct module *owner;
-
const char *name;
int (*probe) (struct usb_interface *intf,
@@ -588,7 +595,9 @@ struct usb_driver {
const struct usb_device_id *id_table;
+ struct usb_dynids dynids;
struct device_driver driver;
+ unsigned int no_dynamic_id:1;
};
#define to_usb_driver(d) container_of(d, struct usb_driver, driver)
@@ -614,7 +623,11 @@ struct usb_class_driver {
* use these in module_init()/module_exit()
* and don't forget MODULE_DEVICE_TABLE(usb, ...)
*/
-extern int usb_register(struct usb_driver *);
+int usb_register_driver(struct usb_driver *, struct module *);
+static inline int usb_register(struct usb_driver *driver)
+{
+ return usb_register_driver(driver, THIS_MODULE);
+}
extern void usb_deregister(struct usb_driver *);
extern int usb_register_dev(struct usb_interface *intf,