301 	if (PAGE_ALIGN(queue->fileio.block_size) == PAGE_ALIGN(size))  in iio_dma_buffer_request_update()
304 	queue->fileio.block_size = size;  in iio_dma_buffer_request_update()
305 	queue->fileio.active_block = NULL;  in iio_dma_buffer_request_update()
308 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_request_update()
309 		block = queue->fileio.blocks[i];  in iio_dma_buffer_request_update()
326 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_request_update()
327 		if (queue->fileio.blocks[i]) {  in iio_dma_buffer_request_update()
328 			block = queue->fileio.blocks[i];  in iio_dma_buffer_request_update()
346 			queue->fileio.blocks[i] = block;  in iio_dma_buffer_request_update()
494 	if (!queue->fileio.active_block) {  in iio_dma_buffer_read()
500 		queue->fileio.pos = 0;  in iio_dma_buffer_read()
501 		queue->fileio.active_block = block;  in iio_dma_buffer_read()
503 		block = queue->fileio.active_block;  in iio_dma_buffer_read()
507 	if (n > block->bytes_used - queue->fileio.pos)  in iio_dma_buffer_read()
508 		n = block->bytes_used - queue->fileio.pos;  in iio_dma_buffer_read()
510 	if (copy_to_user(user_buffer, block->vaddr + queue->fileio.pos, n)) {  in iio_dma_buffer_read()
515 	queue->fileio.pos += n;  in iio_dma_buffer_read()
517 	if (queue->fileio.pos == block->bytes_used) {  in iio_dma_buffer_read()
518 		queue->fileio.active_block = NULL;  in iio_dma_buffer_read()
552 	if (queue->fileio.active_block)  in iio_dma_buffer_data_available()
553 		data_available += queue->fileio.active_block->size;  in iio_dma_buffer_data_available()
644 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_exit()
645 		if (!queue->fileio.blocks[i])  in iio_dma_buffer_exit()
647 		queue->fileio.blocks[i]->state = IIO_BLOCK_STATE_DEAD;  in iio_dma_buffer_exit()
654 	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {  in iio_dma_buffer_exit()
655 		if (!queue->fileio.blocks[i])  in iio_dma_buffer_exit()
657 		iio_buffer_block_put(queue->fileio.blocks[i]);  in iio_dma_buffer_exit()
658 		queue->fileio.blocks[i] = NULL;  in iio_dma_buffer_exit()
660 	queue->fileio.active_block = NULL;  in iio_dma_buffer_exit()