> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > > + if (IS_ERR(res)) > > + return dev_err_probe(&pdev->dev, PTR_ERR(res), "resource get > > +fail\n"); > > + > > + sp_data->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res)); > > + if (IS_ERR(sp_data->regs)) > > + return dev_err_probe(&pdev->dev, PTR_ERR(sp_data->regs), "mas_base > > +get fail\n"); > > Use devm_platform_ioremap_resource() instead. > Other drivers must also access these registers. Warning when using devm_platform_ioremap_resource Can I keep the original settings?