linux-kernel - Re: [PATCH 1/2] PCI: dra7xx: Fix threaded IRQ request for "dra7xx-pcie-main" IRQ

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Message-ID: <20240902073336.fwyjm27ruvfb7gva@thinkpad>
Date: Mon, 2 Sep 2024 13:03:36 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Siddharth Vadapalli <s-vadapalli@...com>
Cc: bhelgaas@...gle.com, lpieralisi@...nel.org, kw@...ux.com,
	robh@...nel.org, vigneshr@...com, kishon@...nel.org,
	j-keerthy@...com, linux-omap@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, stable@...r.kernel.org,
	u-kumar1@...com, srk@...com
Subject: Re: [PATCH 1/2] PCI: dra7xx: Fix threaded IRQ request for
 "dra7xx-pcie-main" IRQ

On Tue, Aug 27, 2024 at 05:54:21PM +0530, Siddharth Vadapalli wrote:
> Commit da87d35a6e51 ("PCI: dra7xx: Use threaded IRQ handler for
> "dra7xx-pcie-main" IRQ") switched from devm_request_irq() to
> devm_request_threaded_irq() for the "dra7xx-pcie-main" interrupt.
> Since the primary handler was set to NULL, the "IRQF_ONESHOT" flag
> should have also been set. Fix this.
> 
> Fixes: da87d35a6e51 ("PCI: dra7xx: Use threaded IRQ handler for "dra7xx-pcie-main" IRQ")
> Cc: <stable@...r.kernel.org>
> Reported-by: Udit Kumar <u-kumar1@...com>
> Suggested-by: Vignesh Raghavendra <vigneshr@...com>
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

- Mani

> ---
>  drivers/pci/controller/dwc/pci-dra7xx.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
> index 4fe3b0cb72ec..20fb50741f3d 100644
> --- a/drivers/pci/controller/dwc/pci-dra7xx.c
> +++ b/drivers/pci/controller/dwc/pci-dra7xx.c
> @@ -850,7 +850,8 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)
>  	dra7xx->mode = mode;
>  
>  	ret = devm_request_threaded_irq(dev, irq, NULL, dra7xx_pcie_irq_handler,
> -			       IRQF_SHARED, "dra7xx-pcie-main", dra7xx);
> +					IRQF_SHARED | IRQF_ONESHOT,
> +					"dra7xx-pcie-main", dra7xx);
>  	if (ret) {
>  		dev_err(dev, "failed to request irq\n");
>  		goto err_gpio;
> -- 
> 2.40.1
> 

-- 
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