711 	struct ffs_io_data *io_data = req->context;  in ffs_epfile_io_complete()  local
715 		io_data->status = req->status;  in ffs_epfile_io_complete()
717 		io_data->status = req->actual;  in ffs_epfile_io_complete()
719 	complete(&io_data->done);  in ffs_epfile_io_complete()
802 static inline void *ffs_alloc_buffer(struct ffs_io_data *io_data,  in ffs_alloc_buffer()  argument
805 	if (io_data->use_sg)  in ffs_alloc_buffer()
806 		return ffs_build_sg_list(&io_data->sgt, data_len);  in ffs_alloc_buffer()
811 static inline void ffs_free_buffer(struct ffs_io_data *io_data)  in ffs_free_buffer()  argument
813 	if (!io_data->buf)  in ffs_free_buffer()
816 	if (io_data->use_sg) {  in ffs_free_buffer()
817 		sg_free_table(&io_data->sgt);  in ffs_free_buffer()
818 		vfree(io_data->buf);  in ffs_free_buffer()
820 		kfree(io_data->buf);  in ffs_free_buffer()
826 	struct ffs_io_data *io_data = container_of(work, struct ffs_io_data,  in ffs_user_copy_worker()  local
828 	int ret = io_data->req->status ? io_data->req->status :  in ffs_user_copy_worker()
829 					 io_data->req->actual;  in ffs_user_copy_worker()
830 	bool kiocb_has_eventfd = io_data->kiocb->ki_flags & IOCB_EVENTFD;  in ffs_user_copy_worker()
832 	if (io_data->read && ret > 0) {  in ffs_user_copy_worker()
833 		kthread_use_mm(io_data->mm);  in ffs_user_copy_worker()
834 		ret = ffs_copy_to_iter(io_data->buf, ret, &io_data->data);  in ffs_user_copy_worker()
835 		kthread_unuse_mm(io_data->mm);  in ffs_user_copy_worker()
838 	io_data->kiocb->ki_complete(io_data->kiocb, ret);  in ffs_user_copy_worker()
840 	if (io_data->ffs->ffs_eventfd && !kiocb_has_eventfd)  in ffs_user_copy_worker()
841 		eventfd_signal(io_data->ffs->ffs_eventfd, 1);  in ffs_user_copy_worker()
843 	usb_ep_free_request(io_data->ep, io_data->req);  in ffs_user_copy_worker()
845 	if (io_data->read)  in ffs_user_copy_worker()
846 		kfree(io_data->to_free);  in ffs_user_copy_worker()
847 	ffs_free_buffer(io_data);  in ffs_user_copy_worker()
848 	kfree(io_data);  in ffs_user_copy_worker()
854 	struct ffs_io_data *io_data = req->context;  in ffs_epfile_async_io_complete()  local
855 	struct ffs_data *ffs = io_data->ffs;  in ffs_epfile_async_io_complete()
859 	INIT_WORK(&io_data->work, ffs_user_copy_worker);  in ffs_epfile_async_io_complete()
860 	queue_work(ffs->io_completion_wq, &io_data->work);  in ffs_epfile_async_io_complete()
945 static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)  in ffs_epfile_io()  argument
971 	halt = (!io_data->read == !epfile->in);  in ffs_epfile_io()
991 		if (!io_data->aio && io_data->read) {  in ffs_epfile_io()
992 			ret = __ffs_epfile_read_buffered(epfile, &io_data->data);  in ffs_epfile_io()
1010 		data_len = iov_iter_count(&io_data->data);  in ffs_epfile_io()
1015 		if (io_data->read)  in ffs_epfile_io()
1018 		io_data->use_sg = gadget->sg_supported && data_len > PAGE_SIZE;  in ffs_epfile_io()
1021 		data = ffs_alloc_buffer(io_data, data_len);  in ffs_epfile_io()
1026 		if (!io_data->read &&  in ffs_epfile_io()
1027 		    !copy_from_iter_full(data, data_len, &io_data->data)) {  in ffs_epfile_io()
1056 	} else if (!io_data->aio) {  in ffs_epfile_io()
1060 		if (io_data->use_sg) {  in ffs_epfile_io()
1062 			req->sg	= io_data->sgt.sgl;  in ffs_epfile_io()
1063 			req->num_sgs = io_data->sgt.nents;  in ffs_epfile_io()
1070 		io_data->buf = data;  in ffs_epfile_io()
1072 		init_completion(&io_data->done);  in ffs_epfile_io()
1073 		req->context  = io_data;  in ffs_epfile_io()
1082 		if (wait_for_completion_interruptible(&io_data->done)) {  in ffs_epfile_io()
1096 			wait_for_completion(&io_data->done);  in ffs_epfile_io()
1097 			interrupted = io_data->status < 0;  in ffs_epfile_io()
1102 		else if (io_data->read && io_data->status > 0)  in ffs_epfile_io()
1103 			ret = __ffs_epfile_read_data(epfile, data, io_data->status,  in ffs_epfile_io()
1104 						     &io_data->data);  in ffs_epfile_io()
1106 			ret = io_data->status;  in ffs_epfile_io()
1111 		if (io_data->use_sg) {  in ffs_epfile_io()
1113 			req->sg	= io_data->sgt.sgl;  in ffs_epfile_io()
1114 			req->num_sgs = io_data->sgt.nents;  in ffs_epfile_io()
1121 		io_data->buf = data;  in ffs_epfile_io()
1122 		io_data->ep = ep->ep;  in ffs_epfile_io()
1123 		io_data->req = req;  in ffs_epfile_io()
1124 		io_data->ffs = epfile->ffs;  in ffs_epfile_io()
1126 		req->context  = io_data;  in ffs_epfile_io()
1131 			io_data->req = NULL;  in ffs_epfile_io()
1150 		ffs_free_buffer(io_data);  in ffs_epfile_io()
1172 	struct ffs_io_data *io_data = kiocb->private;  in ffs_aio_cancel()  local
1181 	if (io_data && io_data->ep && io_data->req)  in ffs_aio_cancel()
1182 		value = usb_ep_dequeue(io_data->ep, io_data->req);  in ffs_aio_cancel()
1193 	struct ffs_io_data io_data, *p = &io_data;  in ffs_epfile_write_iter()  local
1199 		p = kzalloc(sizeof(io_data), GFP_KERNEL);  in ffs_epfile_write_iter()
1230 	struct ffs_io_data io_data, *p = &io_data;  in ffs_epfile_read_iter()  local
1236 		p = kzalloc(sizeof(io_data), GFP_KERNEL);  in ffs_epfile_read_iter()