static int omap_rproc_probe()

in omap_remoteproc.c [1279:1364]

• 67 lines of code
• 12 McCabe index (conditional complexity)

static int omap_rproc_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct omap_rproc *oproc;
	struct rproc *rproc;
	const char *firmware;
	int ret;
	struct reset_control *reset;

	if (!np) {
		dev_err(&pdev->dev, "only DT-based devices are supported\n");
		return -ENODEV;
	}

	reset = devm_reset_control_array_get_exclusive(&pdev->dev);
	if (IS_ERR(reset))
		return PTR_ERR(reset);

	firmware = omap_rproc_get_firmware(pdev);
	if (IS_ERR(firmware))
		return PTR_ERR(firmware);

	ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
	if (ret) {
		dev_err(&pdev->dev, "dma_set_coherent_mask: %d\n", ret);
		return ret;
	}

	rproc = rproc_alloc(&pdev->dev, dev_name(&pdev->dev), &omap_rproc_ops,
			    firmware, sizeof(*oproc));
	if (!rproc)
		return -ENOMEM;

	oproc = rproc->priv;
	oproc->rproc = rproc;
	oproc->reset = reset;
	/* All existing OMAP IPU and DSP processors have an MMU */
	rproc->has_iommu = true;

	ret = omap_rproc_of_get_internal_memories(pdev, rproc);
	if (ret)
		goto free_rproc;

	ret = omap_rproc_get_boot_data(pdev, rproc);
	if (ret)
		goto free_rproc;

	ret = omap_rproc_of_get_timers(pdev, rproc);
	if (ret)
		goto free_rproc;

	init_completion(&oproc->pm_comp);
	oproc->autosuspend_delay = DEFAULT_AUTOSUSPEND_DELAY;

	of_property_read_u32(pdev->dev.of_node, "ti,autosuspend-delay-ms",
			     &oproc->autosuspend_delay);

	pm_runtime_set_autosuspend_delay(&pdev->dev, oproc->autosuspend_delay);

	oproc->fck = devm_clk_get(&pdev->dev, 0);
	if (IS_ERR(oproc->fck)) {
		ret = PTR_ERR(oproc->fck);
		goto free_rproc;
	}

	ret = of_reserved_mem_device_init(&pdev->dev);
	if (ret) {
		dev_warn(&pdev->dev, "device does not have specific CMA pool.\n");
		dev_warn(&pdev->dev, "Typically this should be provided,\n");
		dev_warn(&pdev->dev, "only omit if you know what you are doing.\n");
	}

	platform_set_drvdata(pdev, rproc);

	ret = rproc_add(rproc);
	if (ret)
		goto release_mem;

	return 0;

release_mem:
	of_reserved_mem_device_release(&pdev->dev);
free_rproc:
	rproc_free(rproc);
	return ret;
}