Re: [PATCH] clk: rockchip: fix finding of maximum clock ID

From: Sebastian Reichel
Date: Sat Sep 14 2024 - 02:49:24 EST


Hi,

On Thu, Sep 12, 2024 at 01:32:05PM GMT, Yao Zi wrote:
> If an ID of a branch's child is greater than current maximum, we should
> set new maximum to the child's ID, instead of its parent's.
>
> Fixes: 2dc66a5ab2c6 ("clk: rockchip: rk3588: fix CLK_NR_CLKS usage")
> Signed-off-by: Yao Zi <ziyao@xxxxxxxxxxx>
> ---

Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>

oops, good catch. Note, that the function returns the correct value
for RK3588, since the clocks with the highest IDs are of GATE_LINK
type and do not have their child field set. I have not checked all
the Rockchip SoCs converted for 6.12, so I suggest sending this as
fixes material for 6.12.

Greetings,

-- Sebastian

> drivers/clk/rockchip/clk.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
> index 73d2cbdc716b..0972e9f87470 100644
> --- a/drivers/clk/rockchip/clk.c
> +++ b/drivers/clk/rockchip/clk.c
> @@ -439,7 +439,7 @@ unsigned long rockchip_clk_find_max_clk_id(struct rockchip_clk_branch *list,
> if (list->id > max)
> max = list->id;
> if (list->child && list->child->id > max)
> - max = list->id;
> + max = list->child->id;
> }
>
> return max;
> --
> 2.46.0
>

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