Re: [PATCH 4.19 018/106] clk: actions: Dont reference clk_init_data after registration

[Pavel Machek]

On Sun 2019-10-06 19:20:24, Greg Kroah-Hartman wrote:
> From: Stephen Boyd <sboyd@xxxxxxxxxx>
> 
> [ Upstream commit cf9ec1fc6d7cceb73e7f1efd079d2eae173fdf57 ]
> 
> A future patch is going to change semantics of clk_register() so that
> clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid
> referencing this member here so that we don't run into NULL pointer
> exceptions.

18,19,20,21: I see the patches make sense for mainline, but why were
they selected for stable?

								Pavel


> +++ b/drivers/clk/actions/owl-common.c
> @@ -67,16 +67,17 @@ int owl_clk_probe(struct device *dev, struct clk_hw_onecell_data *hw_clks)
>  	struct clk_hw *hw;
>  
>  	for (i = 0; i < hw_clks->num; i++) {
> +		const char *name;
>  
>  		hw = hw_clks->hws[i];
> -
>  		if (IS_ERR_OR_NULL(hw))
>  			continue;
>  
> +		name = hw->init->name;
>  		ret = devm_clk_hw_register(dev, hw);
>  		if (ret) {
>  			dev_err(dev, "Couldn't register clock %d - %s\n",
> -				i, hw->init->name);
> +				i, name);
>  			return ret;
>  		}
>  	}

-- 
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