756 static void em28xx_irq_callback(struct urb *urb)  in em28xx_irq_callback()  argument
758 	struct em28xx *dev = urb->context;  in em28xx_irq_callback()
761 	switch (urb->status) {  in em28xx_irq_callback()
770 		em28xx_isocdbg("urb completition error %d.\n", urb->status);  in em28xx_irq_callback()
776 	dev->usb_ctl.urb_data_copy(dev, urb);  in em28xx_irq_callback()
780 	for (i = 0; i < urb->number_of_packets; i++) {  in em28xx_irq_callback()
782 		urb->iso_frame_desc[i].status = 0;  in em28xx_irq_callback()
783 		urb->iso_frame_desc[i].actual_length = 0;  in em28xx_irq_callback()
785 	urb->status = 0;  in em28xx_irq_callback()
787 	urb->status = usb_submit_urb(urb, GFP_ATOMIC);  in em28xx_irq_callback()
788 	if (urb->status) {  in em28xx_irq_callback()
790 			       urb->status);  in em28xx_irq_callback()
799 	struct urb *urb;  in em28xx_uninit_usb_xfer()  local
812 		urb = usb_bufs->urb[i];  in em28xx_uninit_usb_xfer()
813 		if (urb) {  in em28xx_uninit_usb_xfer()
815 				usb_kill_urb(urb);  in em28xx_uninit_usb_xfer()
817 				usb_unlink_urb(urb);  in em28xx_uninit_usb_xfer()
821 						  urb->transfer_buffer_length,  in em28xx_uninit_usb_xfer()
823 						  urb->transfer_dma);  in em28xx_uninit_usb_xfer()
825 			usb_free_urb(urb);  in em28xx_uninit_usb_xfer()
826 			usb_bufs->urb[i] = NULL;  in em28xx_uninit_usb_xfer()
831 	kfree(usb_bufs->urb);  in em28xx_uninit_usb_xfer()
834 	usb_bufs->urb = NULL;  in em28xx_uninit_usb_xfer()
848 	struct urb *urb;  in em28xx_stop_urbs()  local
854 		urb = isoc_bufs->urb[i];  in em28xx_stop_urbs()
855 		if (urb) {  in em28xx_stop_urbs()
857 				usb_kill_urb(urb);  in em28xx_stop_urbs()
859 				usb_unlink_urb(urb);  in em28xx_stop_urbs()
876 	struct urb *urb;  in em28xx_alloc_urbs()  local
909 	usb_bufs->urb = kzalloc(sizeof(void *)*num_bufs,  GFP_KERNEL);  in em28xx_alloc_urbs()
910 	if (!usb_bufs->urb) {  in em28xx_alloc_urbs()
919 		kfree(usb_bufs->urb);  in em28xx_alloc_urbs()
935 		urb = usb_alloc_urb(usb_bufs->num_packets, GFP_KERNEL);  in em28xx_alloc_urbs()
936 		if (!urb) {  in em28xx_alloc_urbs()
941 		usb_bufs->urb[i] = urb;  in em28xx_alloc_urbs()
944 			sb_size, GFP_KERNEL, &urb->transfer_dma);  in em28xx_alloc_urbs()
960 			usb_fill_bulk_urb(urb, dev->udev, pipe,  in em28xx_alloc_urbs()
963 			urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;  in em28xx_alloc_urbs()
969 			usb_fill_int_urb(urb, dev->udev, pipe,  in em28xx_alloc_urbs()
972 			urb->transfer_flags = URB_ISO_ASAP |  in em28xx_alloc_urbs()
976 				urb->iso_frame_desc[j].offset = k;  in em28xx_alloc_urbs()
977 				urb->iso_frame_desc[j].length =  in em28xx_alloc_urbs()
983 		urb->number_of_packets = usb_bufs->num_packets;  in em28xx_alloc_urbs()
996 		    int (*urb_data_copy)(struct em28xx *dev, struct urb *urb))  in em28xx_init_usb_xfer()  argument
1027 		rc = usb_clear_halt(dev->udev, usb_bufs->urb[0]->pipe);  in em28xx_init_usb_xfer()
1043 		rc = usb_submit_urb(usb_bufs->urb[i], GFP_ATOMIC);  in em28xx_init_usb_xfer()