Hi Helen, Just spotted a small thing. On Fri, 2019-12-27 at 17:01 -0300, Helen Koike wrote: [..] > +static int rkisp1_probe(struct platform_device *pdev) > +{ > + struct device_node *node = pdev->dev.of_node; > + const struct rkisp1_match_data *clk_data; > + const struct of_device_id *match; > + struct device *dev = &pdev->dev; > + struct rkisp1_device *rkisp1; > + struct v4l2_device *v4l2_dev; > + unsigned int i; > + int ret, irq; > + > + match = of_match_node(rkisp1_of_match, node); > + rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL); > + if (!rkisp1) > + return -ENOMEM; > + > + dev_set_drvdata(dev, rkisp1); > + rkisp1->dev = dev; > + > + rkisp1_debug_init(rkisp1); > + > + rkisp1->base_addr = devm_platform_ioremap_resource(pdev, 0); > + if (IS_ERR(rkisp1->base_addr)) > + return PTR_ERR(rkisp1->base_addr); > + > + irq = platform_get_irq(pdev, 0); > + if (irq < 0) > + return irq; > + > + ret = devm_request_irq(dev, irq, rkisp1_isr, IRQF_SHARED, > + dev_driver_string(dev), dev); > + if (ret) { > + dev_err(dev, "request irq failed: %d\n", ret); > + return ret; > + } > + > + rkisp1->irq = irq; > + clk_data = match->data; > + > + for (i = 0; i < clk_data->size; i++) > + rkisp1->clks[i].id = clk_data->clks[i]; > + ret = devm_clk_bulk_get(dev, clk_data->size, rkisp1->clks); > + if (ret) > + return ret; > + rkisp1->clk_size = clk_data->size; > + > + pm_runtime_enable(&pdev->dev); > + > + strscpy(rkisp1->media_dev.model, RKISP1_DRIVER_NAME, > + sizeof(rkisp1->media_dev.model)); > + rkisp1->media_dev.dev = &pdev->dev; > + strscpy(rkisp1->media_dev.bus_info, > + "platform: " RKISP1_DRIVER_NAME, > + sizeof(rkisp1->media_dev.bus_info)); > + media_device_init(&rkisp1->media_dev); > + > + v4l2_dev = &rkisp1->v4l2_dev; > + v4l2_dev->mdev = &rkisp1->media_dev; > + strscpy(v4l2_dev->name, RKISP1_DRIVER_NAME, sizeof(v4l2_dev->name)); > + > + ret = v4l2_device_register(rkisp1->dev, &rkisp1->v4l2_dev); > + if (ret) > + return ret; > + > + ret = media_device_register(&rkisp1->media_dev); > + if (ret) { > + dev_err(dev, "Failed to register media device: %d\n", ret); > + goto err_unreg_v4l2_dev; > + } > + > + ret = rkisp1_entities_register(rkisp1); > + if (ret) > + goto err_unreg_media_dev; > + > + return 0; > + > +err_unreg_media_dev: > + media_device_unregister(&rkisp1->media_dev); > +err_unreg_v4l2_dev: > + v4l2_device_unregister(&rkisp1->v4l2_dev); > + pm_runtime_disable(&pdev->dev); There's a missing call to debugfs_remove_recursive here. > + return ret; > +} > + > +static int rkisp1_remove(struct platform_device *pdev) > +{ > + struct rkisp1_device *rkisp1 = platform_get_drvdata(pdev); > + > + v4l2_async_notifier_unregister(&rkisp1->notifier); > + v4l2_async_notifier_cleanup(&rkisp1->notifier); > + > + rkisp1_isp_unregister(rkisp1); > + > + media_device_unregister(&rkisp1->media_dev); > + v4l2_device_unregister(&rkisp1->v4l2_dev); > + > + pm_runtime_disable(&pdev->dev); > + > + debugfs_remove_recursive(rkisp1->debug.debugfs_dir); > + return 0; > +} > + Thanks, Ezequiel