static int npcm_rc_probe()

in reset-npcm.c [237:281]

• 36 lines of code
• 9 McCabe index (conditional complexity)

static int npcm_rc_probe(struct platform_device *pdev)
{
	struct npcm_rc_data *rc;
	int ret;

	rc = devm_kzalloc(&pdev->dev, sizeof(*rc), GFP_KERNEL);
	if (!rc)
		return -ENOMEM;

	rc->base = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(rc->base))
		return PTR_ERR(rc->base);

	spin_lock_init(&rc->lock);

	rc->rcdev.owner = THIS_MODULE;
	rc->rcdev.ops = &npcm_rc_ops;
	rc->rcdev.of_node = pdev->dev.of_node;
	rc->rcdev.of_reset_n_cells = 2;
	rc->rcdev.of_xlate = npcm_reset_xlate;

	platform_set_drvdata(pdev, rc);

	ret = devm_reset_controller_register(&pdev->dev, &rc->rcdev);
	if (ret) {
		dev_err(&pdev->dev, "unable to register device\n");
		return ret;
	}

	if (npcm_usb_reset(pdev, rc))
		dev_warn(&pdev->dev, "NPCM USB reset failed, can cause issues with UDC and USB host\n");

	if (!of_property_read_u32(pdev->dev.of_node, "nuvoton,sw-reset-number",
				  &rc->sw_reset_number)) {
		if (rc->sw_reset_number && rc->sw_reset_number < 5) {
			rc->restart_nb.priority = 192,
			rc->restart_nb.notifier_call = npcm_rc_restart,
			ret = register_restart_handler(&rc->restart_nb);
			if (ret)
				dev_warn(&pdev->dev, "failed to register restart handler\n");
		}
	}

	return ret;
}