Re: [PATCH v2 3/3] drm/loongson: Add dummy gpu driver as a subcomponent

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…
> loose coupling, but still be able to works togather to provide a unified

  use loose?          should?          work together?            an?


…
> Add a dummy driver for the GPU, it functional as a subcomponent as well.

                                     is?


Please improve your change descriptions considerably.


…
> +++ b/drivers/gpu/drm/loongson/loongson_module.c
> @@ -29,8 +29,15 @@ static int __init loongson_module_init(void)
>  	if (ret)
>  		return ret;
>
> +	ret = pci_register_driver(&loong_gpu_pci_driver);
> +	if (ret) {
> +		platform_driver_unregister(&lsdc_output_port_platform_driver);
> +		return ret;
> +	}
> +
>  	ret = pci_register_driver(&lsdc_pci_driver);
>  	if (ret) {
> +		pci_unregister_driver(&loong_gpu_pci_driver);
>  		platform_driver_unregister(&lsdc_output_port_platform_driver);
>  		return ret;
>  	}

How do you think about to use another goto chain for common exception handling?
https://wiki.sei.cmu.edu/confluence/display/c/MEM12-C.+Consider+using+a+goto+chain+when+leaving+a+function+on+error+when+using+and+releasing+resources

Would you become interested in the application of scope-based resource management here?


> @@ -43,6 +50,8 @@ static void __exit loongson_module_exit(void)
>  {
>  	pci_unregister_driver(&lsdc_pci_driver);
>
> +	pci_unregister_driver(&loong_gpu_pci_driver);
> +
>  	platform_driver_unregister(&lsdc_output_port_platform_driver);
>  }

I suggest to avoid blank lines for this function implementation.

Regards,
Markus




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