1 files changed, 66 insertions, 3 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 56aa2ee21f1b..7a60946df3b6 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -146,6 +146,10 @@ struct usb_interface {
                                          * active alternate setting */
         unsigned num_altsetting;        /* number of alternate settings */
 
+        /* If there is an interface association descriptor then it will list
+         * the associated interfaces */
+        struct usb_interface_assoc_descriptor *intf_assoc;
+
         int minor;                      /* minor number this interface is
                                          * bound to */
         enum usb_interface_condition condition;         /* state of binding */
@@ -175,6 +179,7 @@ void usb_put_intf(struct usb_interface *intf);
 
 /* this maximum is arbitrary */
 #define USB_MAXINTERFACES       32
+#define USB_MAXIADS             USB_MAXINTERFACES/2
 
 /**
  * struct usb_interface_cache - long-term representation of a device interface
@@ -245,6 +250,11 @@ struct usb_host_config {
         struct usb_config_descriptor    desc;
 
         char *string;           /* iConfiguration string, if present */
+
+        /* List of any Interface Association Descriptors in this
+         * configuration. */
+        struct usb_interface_assoc_descriptor *intf_assoc[USB_MAXIADS];
+
         /* the interfaces associated with this configuration,
          * stored in no particular order */
         struct usb_interface *interface[USB_MAXINTERFACES];
@@ -403,6 +413,8 @@ struct usb_device {
 
         unsigned auto_pm:1;             /* autosuspend/resume in progress */
         unsigned do_remote_wakeup:1;    /* remote wakeup should be enabled */
+        unsigned reset_resume:1;        /* needs reset instead of resume */
+        unsigned persist_enabled:1;     /* USB_PERSIST enabled for this dev */
         unsigned autosuspend_disabled:1; /* autosuspend and autoresume */
         unsigned autoresume_disabled:1;  /*  disabled by the user */
 #endif
@@ -770,6 +782,28 @@ static inline int usb_endpoint_is_isoc_out(const struct usb_endpoint_descriptor
         .match_flags = USB_DEVICE_ID_MATCH_INT_INFO, .bInterfaceClass = (cl), \
         .bInterfaceSubClass = (sc), .bInterfaceProtocol = (pr)
 
+/**
+ * USB_DEVICE_AND_INTERFACE_INFO - macro used to describe a specific usb device
+ *              with a class of usb interfaces
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific device with a specific class of interfaces.
+ *
+ * This is especially useful when explicitly matching devices that have
+ * vendor specific bDeviceClass values, but standards-compliant interfaces.
+ */
+#define USB_DEVICE_AND_INTERFACE_INFO(vend,prod,cl,sc,pr) \
+        .match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
+                | USB_DEVICE_ID_MATCH_DEVICE, \
+        .idVendor = (vend), .idProduct = (prod), \
+        .bInterfaceClass = (cl), \
+        .bInterfaceSubClass = (sc), .bInterfaceProtocol = (pr)
+
 /* ----------------------------------------------------------------------- */
 
 /* Stuff for dynamic usb ids */
@@ -816,10 +850,15 @@ struct usbdrv_wrap {
  *      do (or don't) show up otherwise in the filesystem.
  * @suspend: Called when the device is going to be suspended by the system.
  * @resume: Called when the device is being resumed by the system.
+ * @reset_resume: Called when the suspended device has been reset instead
+ *      of being resumed.
  * @pre_reset: Called by usb_reset_composite_device() when the device
  *      is about to be reset.
  * @post_reset: Called by usb_reset_composite_device() after the device
- *      has been reset.
+ *      has been reset, or in lieu of @resume following a reset-resume
+ *      (i.e., the device is reset instead of being resumed, as might
+ *      happen if power was lost).  The second argument tells which is
+ *      the reason.
  * @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.
@@ -859,9 +898,10 @@ struct usb_driver {
 
         int (*suspend) (struct usb_interface *intf, pm_message_t message);
         int (*resume) (struct usb_interface *intf);
+        int (*reset_resume)(struct usb_interface *intf);
 
-        void (*pre_reset) (struct usb_interface *intf);
-        void (*post_reset) (struct usb_interface *intf);
+        int (*pre_reset)(struct usb_interface *intf);
+        int (*post_reset)(struct usb_interface *intf);
 
         const struct usb_device_id *id_table;
 
@@ -964,6 +1004,7 @@ extern int usb_disabled(void);
 #define URB_ZERO_PACKET         0x0040  /* Finish bulk OUT with short packet */
 #define URB_NO_INTERRUPT        0x0080  /* HINT: no non-error interrupt
                                          * needed */
+#define URB_FREE_BUFFER         0x0100  /* Free transfer buffer with the URB */
 
 struct usb_iso_packet_descriptor {
         unsigned int offset;
@@ -974,11 +1015,26 @@ struct usb_iso_packet_descriptor {
 
 struct urb;
 
+struct usb_anchor {
+        struct list_head urb_list;
+        wait_queue_head_t wait;
+        spinlock_t lock;
+};
+
+static inline void init_usb_anchor(struct usb_anchor *anchor)
+{
+        INIT_LIST_HEAD(&anchor->urb_list);
+        init_waitqueue_head(&anchor->wait);
+        spin_lock_init(&anchor->lock);
+}
+
 typedef void (*usb_complete_t)(struct urb *);
 
 /**
  * struct urb - USB Request Block
  * @urb_list: For use by current owner of the URB.
+ * @anchor_list: membership in the list of an anchor
+ * @anchor: to anchor URBs to a common mooring
  * @pipe: Holds endpoint number, direction, type, and more.
  *      Create these values with the eight macros available;
  *      usb_{snd,rcv}TYPEpipe(dev,endpoint), where the TYPE is "ctrl"
@@ -1151,6 +1207,8 @@ struct urb
         /* public: documented fields in the urb that can be used by drivers */
         struct list_head urb_list;      /* list head for use by the urb's
                                          * current owner */
+        struct list_head anchor_list;   /* the URB may be anchored by the driver */
+        struct usb_anchor *anchor;
         struct usb_device *dev;         /* (in) pointer to associated device */
         unsigned int pipe;              /* (in) pipe information */
         int status;                     /* (return) non-ISO status */
@@ -1286,6 +1344,11 @@ extern struct urb *usb_get_urb(struct urb *urb);
 extern int usb_submit_urb(struct urb *urb, gfp_t mem_flags);
 extern int usb_unlink_urb(struct urb *urb);
 extern void usb_kill_urb(struct urb *urb);
+extern void usb_kill_anchored_urbs(struct usb_anchor *anchor);
+extern void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor);
+extern void usb_unanchor_urb(struct urb *urb);
+extern int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor,
+                                         unsigned int timeout);
 
 void *usb_buffer_alloc (struct usb_device *dev, size_t size,
         gfp_t mem_flags, dma_addr_t *dma);