302 	if (PAGE_ALIGN(queue->fileio.block_size) == PAGE_ALIGN(size))  in iio_dma_buffer_request_update()
305 	queue->fileio.block_size = size;  in iio_dma_buffer_request_update()
306 	queue->fileio.active_block = NULL;  in iio_dma_buffer_request_update()
309 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_request_update()
310 		block = queue->fileio.blocks[i];  in iio_dma_buffer_request_update()
327 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_request_update()
328 		if (queue->fileio.blocks[i]) {  in iio_dma_buffer_request_update()
329 			block = queue->fileio.blocks[i];  in iio_dma_buffer_request_update()
347 			queue->fileio.blocks[i] = block;  in iio_dma_buffer_request_update()
495 	if (!queue->fileio.active_block) {  in iio_dma_buffer_read()
501 		queue->fileio.pos = 0;  in iio_dma_buffer_read()
502 		queue->fileio.active_block = block;  in iio_dma_buffer_read()
504 		block = queue->fileio.active_block;  in iio_dma_buffer_read()
508 	if (n > block->bytes_used - queue->fileio.pos)  in iio_dma_buffer_read()
509 		n = block->bytes_used - queue->fileio.pos;  in iio_dma_buffer_read()
511 	if (copy_to_user(user_buffer, block->vaddr + queue->fileio.pos, n)) {  in iio_dma_buffer_read()
516 	queue->fileio.pos += n;  in iio_dma_buffer_read()
518 	if (queue->fileio.pos == block->bytes_used) {  in iio_dma_buffer_read()
519 		queue->fileio.active_block = NULL;  in iio_dma_buffer_read()
553 	if (queue->fileio.active_block)  in iio_dma_buffer_data_available()
554 		data_available += queue->fileio.active_block->size;  in iio_dma_buffer_data_available()
645 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_exit()
646 		if (!queue->fileio.blocks[i])  in iio_dma_buffer_exit()
648 		queue->fileio.blocks[i]->state = IIO_BLOCK_STATE_DEAD;  in iio_dma_buffer_exit()
655 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_exit()
656 		if (!queue->fileio.blocks[i])  in iio_dma_buffer_exit()
658 		iio_buffer_block_put(queue->fileio.blocks[i]);  in iio_dma_buffer_exit()
659 		queue->fileio.blocks[i] = NULL;  in iio_dma_buffer_exit()
661 	queue->fileio.active_block = NULL;  in iio_dma_buffer_exit()