linux-kernel - Re: [PATCH 1/2] i2c: imx: use devm_request_threaded

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Date:   Fri, 23 Oct 2020 17:23:48 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     peng.fan@....com
Cc:     shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
        kernel@...gutronix.de, linux-imx@....com,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] i2c: imx: use devm_request_threaded_irq to simplify code

On Fri, 23 Oct 2020 at 10:27, <peng.fan@....com> wrote:
>
> From: Peng Fan <peng.fan@....com>
>
> Use devm_request_threaded_irq to simplify code
>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  drivers/i2c/busses/i2c-imx.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
> index e6f8d6e45a15..ba9d639223ec 100644
> --- a/drivers/i2c/busses/i2c-imx.c
> +++ b/drivers/i2c/busses/i2c-imx.c
> @@ -1216,8 +1216,8 @@ static int i2c_imx_probe(struct platform_device *pdev)
>                 goto rpm_disable;
>
>         /* Request IRQ */
> -       ret = request_threaded_irq(irq, i2c_imx_isr, NULL, IRQF_SHARED,
> -                                  pdev->name, i2c_imx);
> +       ret = devm_request_threaded_irq(&pdev->dev, irq, i2c_imx_isr, NULL, IRQF_SHARED,
> +                                       pdev->name, i2c_imx);

Really? You silently revert commit e50e4f0b85be ("i2c: imx: Fix
external abort on interrupt in exit paths"). This is not a
simplification but serious change. NAK. At least without proper
reasoning of why this is suddenly safe.

Best regards,
Krzysztof
Best regards,
Krzysztof