static int rproc_fw_boot()

in remoteproc_core.c [1486:1560]

• 51 lines of code
• 8 McCabe index (conditional complexity)

static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
{
	struct device *dev = &rproc->dev;
	const char *name = rproc->firmware;
	int ret;

	ret = rproc_fw_sanity_check(rproc, fw);
	if (ret)
		return ret;

	dev_info(dev, "Booting fw image %s, size %zd\n", name, fw->size);

	/*
	 * if enabling an IOMMU isn't relevant for this rproc, this is
	 * just a nop
	 */
	ret = rproc_enable_iommu(rproc);
	if (ret) {
		dev_err(dev, "can't enable iommu: %d\n", ret);
		return ret;
	}

	/* Prepare rproc for firmware loading if needed */
	ret = rproc_prepare_device(rproc);
	if (ret) {
		dev_err(dev, "can't prepare rproc %s: %d\n", rproc->name, ret);
		goto disable_iommu;
	}

	rproc->bootaddr = rproc_get_boot_addr(rproc, fw);

	/* Load resource table, core dump segment list etc from the firmware */
	ret = rproc_parse_fw(rproc, fw);
	if (ret)
		goto unprepare_rproc;

	/* reset max_notifyid */
	rproc->max_notifyid = -1;

	/* reset handled vdev */
	rproc->nb_vdev = 0;

	/* handle fw resources which are required to boot rproc */
	ret = rproc_handle_resources(rproc, rproc_loading_handlers);
	if (ret) {
		dev_err(dev, "Failed to process resources: %d\n", ret);
		goto clean_up_resources;
	}

	/* Allocate carveout resources associated to rproc */
	ret = rproc_alloc_registered_carveouts(rproc);
	if (ret) {
		dev_err(dev, "Failed to allocate associated carveouts: %d\n",
			ret);
		goto clean_up_resources;
	}

	ret = rproc_start(rproc, fw);
	if (ret)
		goto clean_up_resources;

	return 0;

clean_up_resources:
	rproc_resource_cleanup(rproc);
	kfree(rproc->cached_table);
	rproc->cached_table = NULL;
	rproc->table_ptr = NULL;
unprepare_rproc:
	/* release HW resources if needed */
	rproc_unprepare_device(rproc);
disable_iommu:
	rproc_disable_iommu(rproc);
	return ret;
}