> > } > > > > +static int mvpp2_get_sram(struct platform_device *pdev, > > + struct mvpp2 *priv) > > +{ > > + struct device_node *dn = pdev->dev.of_node; > > + static bool defer_once; > > + struct resource *res; > > + > > + if (has_acpi_companion(&pdev->dev)) { > > + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); > > + if (!res) { > > + dev_warn(&pdev->dev, "ACPI is too old, Flow control > not supported\n"); > > + return 0; > > + } > > + priv->cm3_base = devm_ioremap_resource(&pdev->dev, > res); > > + if (IS_ERR(priv->cm3_base)) > > + return PTR_ERR(priv->cm3_base); > > + } else { > > + priv->sram_pool = of_gen_pool_get(dn, "cm3-mem", 0); > > + if (!priv->sram_pool) { > > + if (!defer_once) { > > + defer_once = true; > > + /* Try defer once */ > > + return -EPROBE_DEFER; > > + } > > + dev_warn(&pdev->dev, "DT is too old, Flow control > not > > +supported\n"); > > This warning will show on every DT system with no cm3-mem property, > right? > All DT system would has cm3-mem property if " add CM3 SRAM memory to cp11x ethernet device tree " patch applied. This is also only warning message, without any functional impact. Regards, Stefan.