static int cxl_nvdimm_probe()

in pmem.c [32:75]

• 38 lines of code
• 5 McCabe index (conditional complexity)

static int cxl_nvdimm_probe(struct device *dev)
{
	struct cxl_nvdimm *cxl_nvd = to_cxl_nvdimm(dev);
	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
	unsigned long flags = 0, cmd_mask = 0;
	struct cxl_dev_state *cxlds = cxlmd->cxlds;
	struct cxl_nvdimm_bridge *cxl_nvb;
	struct nvdimm *nvdimm;
	int rc;

	cxl_nvb = cxl_find_nvdimm_bridge(cxl_nvd);
	if (!cxl_nvb)
		return -ENXIO;

	device_lock(&cxl_nvb->dev);
	if (!cxl_nvb->nvdimm_bus) {
		rc = -ENXIO;
		goto out;
	}

	set_exclusive_cxl_commands(cxlds, exclusive_cmds);
	rc = devm_add_action_or_reset(dev, clear_exclusive, cxlds);
	if (rc)
		goto out;

	set_bit(NDD_LABELING, &flags);
	set_bit(ND_CMD_GET_CONFIG_SIZE, &cmd_mask);
	set_bit(ND_CMD_GET_CONFIG_DATA, &cmd_mask);
	set_bit(ND_CMD_SET_CONFIG_DATA, &cmd_mask);
	nvdimm = nvdimm_create(cxl_nvb->nvdimm_bus, cxl_nvd, NULL, flags,
			       cmd_mask, 0, NULL);
	if (!nvdimm) {
		rc = -ENOMEM;
		goto out;
	}

	dev_set_drvdata(dev, nvdimm);
	rc = devm_add_action_or_reset(dev, unregister_nvdimm, nvdimm);
out:
	device_unlock(&cxl_nvb->dev);
	put_device(&cxl_nvb->dev);

	return rc;
}