linux-kernel - Re: [PATCH v2] clk: ti: dra7-atl: don't allocate `parent

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Date:   Thu, 27 Oct 2022 17:27:08 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Dario Binacchi <dario.binacchi@...rulasolutions.com>,
        linux-kernel@...r.kernel.org
Cc:     Amarula patchwork <linux-amarula@...rulasolutions.com>,
        michael@...rulasolutions.com,
        Dario Binacchi <dario.binacchi@...rulasolutions.com>,
        kernel test robot <lkp@...el.com>,
        Allison Randal <allison@...utok.net>,
        Miaoqian Lin <linmq006@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Tero Kristo <kristo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tony Lindgren <tony@...mide.com>, linux-clk@...r.kernel.org,
        linux-omap@...r.kernel.org
Subject: Re: [PATCH v2] clk: ti: dra7-atl: don't allocate `parent_names' variable

Quoting Dario Binacchi (2022-10-18 09:03:52)
> diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
> index ff4d6a951681..78482d1a4a33 100644
> --- a/drivers/clk/ti/clk-dra7-atl.c
> +++ b/drivers/clk/ti/clk-dra7-atl.c
> @@ -188,24 +188,17 @@ static void __init of_dra7_atl_clock_setup(struct device_node *node)
>                 goto cleanup;
>         }
>  
> -       parent_names = kzalloc(sizeof(char *), GFP_KERNEL);
> -
> -       if (!parent_names)
> -               goto cleanup;
> -
>         parent_names[0] = of_clk_get_parent_name(node, 0);

Can you use struct clk_parent_data instead and assign index to 0? Then
we don't even need to use of_clk_get_parent_name() here.