Re: [PATCH 4/7] clk: st: clkgen-pll: Add iounmap() in clkgen_c32_pll_setup()

[Markus Elfring]

> Add a iounmap() to release the memory allocated by

      an          call?


> clkgen_get_register_base() in error path.

Was such an improvable implementation detail detected by any known source code
analysis approaches?


…
> +++ b/drivers/clk/st/clkgen-pll.c
…
> @@ -829,7 +829,11 @@ static void __init clkgen_c32_pll_setup(struct device_node *np,
>  	kfree(pll_name);
>  	kfree(clk_data->clks);
>  	kfree(clk_data);
> +err_unmap:
> +	if (pll_base)
> +		iounmap(pll_base);

* I find this pointer check redundant because of a previous variable check.
  https://elixir.bootlin.com/linux/v6.19-rc5/source/drivers/clk/st/clkgen-pll.c#L771-L773

* I suggest to refine the goto chain a bit more.


>  }
> +
>  static void __init clkgen_c32_pll0_setup(struct device_node *np)
…

Regards,
Markus