linux-kernel - Re: [PATCH] wfx: fix irqf

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Message-ID: <3096745.nmkoU2l6Xm@pc-42>
Date:   Tue, 16 Mar 2021 08:53:03 +0100
From:   Jérôme Pouiller <jerome.pouiller@...abs.com>
To:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        linux-mmc@...r.kernel.org
Subject: Re: [PATCH] wfx: fix irqf_oneshot.cocci warnings

Hello,

On Monday 15 March 2021 22:09:20 CET kernel test robot wrote:
> 
> From: kernel test robot <lkp@...el.com>
> 
> drivers/net/wireless/silabs/wfx/bus_sdio.c:134:8-33: ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT
> 
>  Since commit 1c6c69525b40 ("genirq: Reject bogus threaded irq requests")
>  threaded IRQs without a primary handler need to be requested with
>  IRQF_ONESHOT, otherwise the request will fail.
> 
>  So pass the IRQF_ONESHOT flag in this case.
> 
> Generated by: scripts/coccinelle/misc/irqf_oneshot.cocci
> 
> CC: Jérôme Pouiller <jerome.pouiller@...abs.com>
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: kernel test robot <lkp@...el.com>
> ---
> 
> url:    https://github.com/0day-ci/linux/commits/Jerome-Pouiller/wfx-get-out-from-the-staging-area/20210315-212855
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git b828324bba8f575fde487a91fec07303789dda8a
> 
>  bus_sdio.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> --- a/drivers/net/wireless/silabs/wfx/bus_sdio.c
> +++ b/drivers/net/wireless/silabs/wfx/bus_sdio.c
> @@ -132,7 +132,8 @@ static int wfx_sdio_irq_subscribe(void *
>                 flags = IRQF_TRIGGER_HIGH;
>         flags |= IRQF_ONESHOT;
>         return devm_request_threaded_irq(&bus->func->dev, bus->of_irq, NULL,
> -                                        wfx_sdio_irq_handler_ext, flags,
> +                                        wfx_sdio_irq_handler_ext,
> +                                        flags | IRQF_ONESHOT,
>                                          "wfx", bus);
>  }
> 
> 

Obviously, "flags" always contains IRQF_ONESHOT. So, it is a false positive.


-- 
Jérôme Pouiller