V4L/DVB (8153): Subdriver pac207 added and minor changes.

pac207 added.
Check status on mutex lock.
Call back on frame dequeue.
Free the resources on last close only.
Avoid URB and ISOC errors on close.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/gspca/Makefile

-obj-$(CONFIG_GSPCA)	+= gspca_main.o gspca_stk014.o
+obj-$(CONFIG_GSPCA)	+= gspca_main.o gspca_pac207.o gspca_stk014.o
 
 gspca_main-objs := gspca.o
+gspca_pac207-objs := pac207.o
 gspca_stk014-objs := stk014.o

drivers/media/video/gspca/gspca.h

@@ -101,6 +101,7 @@ struct sd_desc {
 	cam_v_op stopN;		/* called on stream off - main alt */
 	cam_v_op stop0;		/* called on stream off - alt 0 */
 	cam_v_op close;		/* called on close */
+	cam_v_op dq_callback;	/* called when a frame has been dequeued */
 	cam_pkt_op pkt_scan;
 	cam_jpg_op get_jcomp;
 	cam_jpg_op set_jcomp;
@@ -167,8 +168,6 @@ int gspca_dev_probe(struct usb_interface *intf,
 		const struct usb_device_id *id,
 		const struct sd_desc *sd_desc,
 		int dev_size);
-int gspca_dev_init(struct gspca_dev *gspca_dev,
-		   struct usb_interface *intf);
 void gspca_disconnect(struct usb_interface *intf);
 struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
 				    int packet_type,