linux-kernel - Re: [PATCH] clk: at91: pmc: Use common error handling code in pmc_register

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Message-ID: <672befa1-cefb-480e-b474-ff40e4fe80ed@microchip.com>
Date: Wed, 18 Sep 2024 14:58:36 +0200
From: Nicolas Ferre <nicolas.ferre@...rochip.com>
To: Markus Elfring <Markus.Elfring@....de>, <linux-clk@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, Alexandre Belloni
	<alexandre.belloni@...tlin.com>, Claudiu Beznea <claudiu.beznea@...on.dev>,
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>
CC: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] clk: at91: pmc: Use common error handling code in
 pmc_register_ops()

On 17/09/2024 at 14:34, Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Tue, 17 Sep 2024 14:28:22 +0200
> 
> Add a jump target so that a bit of exception handling can be better reused
> at the end of this function implementation.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

Bad track record and no real benefit from the patch:
NACK, sorry.

Regards,
   Nicolas

> ---
>   drivers/clk/at91/pmc.c | 18 ++++++++++--------
>   1 file changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
> index 5aa9c1f1c886..040b70e1ffbc 100644
> --- a/drivers/clk/at91/pmc.c
> +++ b/drivers/clk/at91/pmc.c
> @@ -162,20 +162,18 @@ static int __init pmc_register_ops(void)
>          if (!np)
>                  return -ENODEV;
> 
> -       if (!of_device_is_available(np)) {
> -               of_node_put(np);
> -               return -ENODEV;
> -       }
> +       if (!of_device_is_available(np))
> +               goto put_node;
> +
>          of_node_put(np);
> 
>          np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-securam");
>          if (!np)
>                  return -ENODEV;
> 
> -       if (!of_device_is_available(np)) {
> -               of_node_put(np);
> -               return -ENODEV;
> -       }
> +       if (!of_device_is_available(np))
> +               goto put_node;
> +
>          of_node_put(np);
> 
>          at91_pmc_backup_suspend = of_iomap(np, 0);
> @@ -187,6 +185,10 @@ static int __init pmc_register_ops(void)
>          register_syscore_ops(&pmc_syscore_ops);
> 
>          return 0;
> +
> +put_node:
> +       of_node_put(np);
> +       return -ENODEV;
>   }
>   /* This has to happen before arch_initcall because of the tcb_clksrc driver */
>   postcore_initcall(pmc_register_ops);
> --
> 2.46.0
>