linux-kernel - Re: [PATCH 1/2] bus: qcom-ebi2: use prefix devm for clock resource allocation functions

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Date:   Mon, 8 May 2023 15:34:46 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Ziliang Liao <saraday@...t.edu.cn>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        hust-os-kernel-patches@...glegroups.com,
        Dongliang Mu <dzm91@...t.edu.cn>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] bus: qcom-ebi2: use prefix devm for clock resource
 allocation functions

On Sun, Apr 30, 2023 at 2:53 PM Ziliang Liao <saraday@...t.edu.cn> wrote:

> Smatch reports:
>
> drivers/bus/qcom-ebi2.c:387 qcom_ebi2_probe() warn: 'ebi2clk' from
> clk_prepare_enable() not released on lines: 358.
>
> drivers/bus/qcom-ebi2.c:387 qcom_ebi2_probe() warn: 'ebi2xclk' from
> clk_prepare_enabled() not released on lines: 358.
>
> The clk_disable_unprepare() is only used to explicitly release resources
> when the qcom_ebi2_probe() fails, and when executed correctly, it may
> cause resource leakage due to unknown release time.
>
> Replace devm_clk_get() and clk_prepare_enable() with
> devm_clk_get_enabled() to automatically manage the allocated resources.
>
> Fixes: 335a12754808 ("bus: qcom: add EBI2 driver")
> Signed-off-by: Ziliang Liao <saraday@...t.edu.cn>
> Reviewed-by: Dongliang Mu <dzm91@...t.edu.cn>

Looks good:
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

I think Bjorn can queue this in the Qualcomm ARM tree.

Yours,
Linus Walleij