linux-kernel - Re: [PATCH] extcon: max77693: Add extra IRQF

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Date:   Thu, 25 Jul 2019 09:23:37 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Vasyl Gomonovych <gomonovych@...il.com>
Cc:     Chanwoo Choi <cw00.choi@...sung.com>,
        Bartłomiej Żołnierkiewicz 
        <b.zolnierkie@...sung.com>, myungjoo.ham@...sung.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] extcon: max77693: Add extra IRQF_ONESHOT

On Thu, 25 Jul 2019 at 08:37, Vasyl Gomonovych <gomonovych@...il.com> wrote:
>
> Do not fire irq again until thread done
> This issue was found by code inspection
> Coccicheck irqf_oneshot.cocci

Rationale does not look convincing. Do you fix real problem or just
automatic fix from coccinelle? If the latter, then it looks wrong.
This is virtual IRQ so no need for oneshot. The hardware IRQ has
oneshot set. Otherwise please provide slightly more specific rationale
for this commit.

Best regards,
Krzysztof


>
> Signed-off-by: Vasyl Gomonovych <gomonovych@...il.com>
> ---
>  drivers/extcon/extcon-max77693.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
> index 32fc5a66ffa9..68e42cd87e98 100644
> --- a/drivers/extcon/extcon-max77693.c
> +++ b/drivers/extcon/extcon-max77693.c
> @@ -1142,7 +1142,7 @@ static int max77693_muic_probe(struct platform_device *pdev)
>
>                 ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
>                                 max77693_muic_irq_handler,
> -                               IRQF_NO_SUSPEND,
> +                               IRQF_NO_SUSPEND | IRQF_ONESHOT,
>                                 muic_irq->name, info);
>                 if (ret) {
>                         dev_err(&pdev->dev,
> --
> 2.17.1
>