usb/misc/iowarrior.c

73 struct iowarrior {  struct
74 	struct mutex mutex;			/* locks this structure */
75 	struct usb_device *udev;		/* save off the usb device pointer */
76 	struct usb_interface *interface;	/* the interface for this device */
77 	unsigned char minor;			/* the starting minor number for this device */
78 …truct usb_endpoint_descriptor *int_out_endpoint;	/* endpoint for reading (needed for IOW56 only) */
79 	struct usb_endpoint_descriptor *int_in_endpoint;	/* endpoint for reading */
80 	struct urb *int_in_urb;		/* the urb for reading data */
81 	unsigned char *int_in_buffer;	/* buffer for data to be read */
82 	unsigned char serial_number;	/* to detect lost packages */
83 	unsigned char *read_queue;	/* size is MAX_INTERRUPT_BUFFER * packet size */
84 	wait_queue_head_t read_wait;
85 	wait_queue_head_t write_wait;	/* wait-queue for writing to the device */
86 	atomic_t write_busy;		/* number of write-urbs submitted */
87 	atomic_t read_idx;
88 	atomic_t intr_idx;
89 	atomic_t overflow_flag;		/* signals an index 'rollover' */
90 	int present;			/* this is 1 as long as the device is connected */
91 	int opened;			/* this is 1 if the device is currently open */
92 	char chip_serial[9];		/* the serial number string of the chip connected */
93 	int report_size;		/* number of bytes in a report */
94 	u16 product_id;
95 	struct usb_anchor submitted;