linux-kernel - Re: [PATCH 7/9] clk: sprd: Don't reference clk_init

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Message-ID: <CAG2=9p9bhEpWRAEWPsqwyEGAm4xeRtJmh1dQCvA808SPmiAR5Q@mail.gmail.com>
Date:   Fri, 2 Aug 2019 09:57:05 +0800
From:   Chunyan Zhang <zhang.chunyan@...aro.org>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        Baolin Wang <baolin.wang@...aro.org>
Subject: Re: [PATCH 7/9] clk: sprd: Don't reference clk_init_data after registration

On Thu, 1 Aug 2019 at 03:35, Stephen Boyd <sboyd@...nel.org> wrote:
>
> 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.
>
> Cc: Chunyan Zhang <zhang.chunyan@...aro.org>
> Cc: Baolin Wang <baolin.wang@...aro.org>
> Signed-off-by: Stephen Boyd <sboyd@...nel.org>
> ---
>
> Please ack so I can take this through clk tree

Acked-by: Chunyan Zhang <zhang.chunyan@...aro.org>

Thanks.

>
>  drivers/clk/sprd/common.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/clk/sprd/common.c b/drivers/clk/sprd/common.c
> index a5bdca1de5d0..9d56eac43832 100644
> --- a/drivers/clk/sprd/common.c
> +++ b/drivers/clk/sprd/common.c
> @@ -76,16 +76,17 @@ int sprd_clk_probe(struct device *dev, struct clk_hw_onecell_data *clkhw)
>         struct clk_hw *hw;
>
>         for (i = 0; i < clkhw->num; i++) {
> +               const char *name;
>
>                 hw = clkhw->hws[i];
> -
>                 if (!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;
>                 }
>         }
> --
> Sent by a computer through tubes
>