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From: Liviu Dudau <liviu.dudau@arm.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Sudeep Holla <sudeep.holla@kernel.org>,
	Lorenzo Pieralisi <lpieralisi@kernel.org>,
	Linus Walleij <linusw@kernel.org>,
	Russell King <linux@armlinux.org.uk>,
	Thierry Reding <thierry.reding@kernel.org>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org
Subject: Re: [PATCH 1/2] ARM: versatile: clock: Make sure clk_init_data is fully initialized
Date: Fri, 21 Aug 2026 11:59:32 +0100	[thread overview]
Message-ID: <aogvlFKhqzwyEwhY@e142607> (raw)
In-Reply-To: <66afbce10c485164340a3947885cdf4217a4ee2d.1787239869.git.geert+renesas@glider.be>

On Fri, Aug 21, 2026 at 10:52:24AM +0200, Geert Uytterhoeven wrote:
> The clk_init_data structure contains several mutually-exclusive members
> for different methods to specify the possible parents of a clock,
> prompting drivers to initialize only the members they need.  However,
> not initializing all members may cause subtle issues, which are only
> exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is
> enabled.
> 
> Make sure all members are fully initialized, to avoid such bugs, and to
> prevent future breakage when converting drivers to a different method
> for specifying the parents.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>

Best regards,
Liviu

> ---
> Compile-tested only.
> ---
>  arch/arm/mach-versatile/spc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-versatile/spc.c b/arch/arm/mach-versatile/spc.c
> index 7c3191aa3e12d1f3..d3f84819532fa498 100644
> --- a/arch/arm/mach-versatile/spc.c
> +++ b/arch/arm/mach-versatile/spc.c
> @@ -522,7 +522,7 @@ static struct clk_ops clk_spc_ops = {
>  
>  static struct clk *ve_spc_clk_register(struct device *cpu_dev)
>  {
> -	struct clk_init_data init;
> +	struct clk_init_data init = {};
>  	struct clk_spc *spc;
>  
>  	spc = kzalloc_obj(*spc);
> -- 
> 2.43.0
> 

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯


  reply	other threads:[~2026-08-21 10:59 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-21  8:52 [PATCH 0/2] ARM/soc: Make sure clk_init_data is fully initialized Geert Uytterhoeven
2026-08-21  8:52 ` [PATCH 1/2] ARM: versatile: clock: " Geert Uytterhoeven
2026-08-21 10:59   ` Liviu Dudau [this message]
2026-08-21 12:37   ` Linus Walleij
2026-08-21  8:52 ` [PATCH 2/2] soc/tegra: pmc: " Geert Uytterhoeven

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