Re: [PATCH 39/45] clk: ux500: Make sure clk_init_data is fully initialized

[Ulf Hansson]

On Fri, Aug 21, 2026 at 11:04 AM Geert Uytterhoeven
<geert+renesas@xxxxxxxxx> 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@xxxxxxxxx>

Acked-by: Ulf Hansson <ulfh@xxxxxxxxxx>

Kind regards
Uffe

> ---
> Compile-tested only.
> ---
>  drivers/clk/ux500/clk-prcc.c    | 2 +-
>  drivers/clk/ux500/clk-prcmu.c   | 4 ++--
>  drivers/clk/ux500/clk-sysctrl.c | 2 +-
>  3 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/clk/ux500/clk-prcc.c b/drivers/clk/ux500/clk-prcc.c
> index dce235df2576dfb2..dde72d2fd0ac67ae 100644
> --- a/drivers/clk/ux500/clk-prcc.c
> +++ b/drivers/clk/ux500/clk-prcc.c
> @@ -97,8 +97,8 @@ static struct clk *clk_reg_prcc(const char *name,
>                                 unsigned long flags,
>                                 const struct clk_ops *clk_prcc_ops)
>  {
> +       struct clk_init_data clk_prcc_init = {};
>         struct clk_prcc *clk;
> -       struct clk_init_data clk_prcc_init;
>         struct clk *clk_reg;
>
>         if (!name) {
> diff --git a/drivers/clk/ux500/clk-prcmu.c b/drivers/clk/ux500/clk-prcmu.c
> index ac96c46bd1bbf76b..d89f3b634f8bbd26 100644
> --- a/drivers/clk/ux500/clk-prcmu.c
> +++ b/drivers/clk/ux500/clk-prcmu.c
> @@ -200,8 +200,8 @@ static struct clk_hw *clk_reg_prcmu(const char *name,
>                                     unsigned long flags,
>                                     const struct clk_ops *clk_prcmu_ops)
>  {
> +       struct clk_init_data clk_prcmu_init = {};
>         struct clk_prcmu *clk;
> -       struct clk_init_data clk_prcmu_init;
>         int ret;
>
>         if (!name) {
> @@ -357,8 +357,8 @@ struct clk_hw *clk_reg_prcmu_clkout(const char *name,
>                                     u8 source, u8 divider)
>
>  {
> +       struct clk_init_data clk_prcmu_clkout_init = {};
>         struct clk_prcmu_clkout *clk;
> -       struct clk_init_data clk_prcmu_clkout_init;
>         u8 clkout_id;
>         int ret;
>
> diff --git a/drivers/clk/ux500/clk-sysctrl.c b/drivers/clk/ux500/clk-sysctrl.c
> index ba3258c88d28e101..2127a949e56ccf27 100644
> --- a/drivers/clk/ux500/clk-sysctrl.c
> +++ b/drivers/clk/ux500/clk-sysctrl.c
> @@ -127,8 +127,8 @@ static struct clk *clk_reg_sysctrl(struct device *dev,
>                                 unsigned long flags,
>                                 const struct clk_ops *clk_sysctrl_ops)
>  {
> +       struct clk_init_data clk_sysctrl_init = {};
>         struct clk_sysctrl *clk;
> -       struct clk_init_data clk_sysctrl_init;
>         struct clk *clk_reg;
>         int i;
>
> --
> 2.43.0
>