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From: Marc Gonzalez <marc.w.gonzalez@free.fr>
To: Aman Sharma <amanharitsh123@gmail.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Bjorn Helgaas <bhelgaas@google.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Andrew Murray <amurray@thegoodpenguin.co.uk>,
	Linus Walleij <linus.walleij@linaro.org>,
	Ryder Lee <ryder.lee@mediatek.com>,
	Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>,
	Hou Zhiqiang <Zhiqiang.Hou@nxp.com>,
	Mans Rullgard <mans@mansr.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org
Subject: Re: [PATCH 4/5] pci: handled return value of platform_get_irq correctly
Date: Thu, 12 Mar 2020 10:53:06 +0100	[thread overview]
Message-ID: <6e413f63-06e3-9613-97dc-ff5968a4f759@free.fr> (raw)
In-Reply-To: <b773b3b1ed25a0e6d5d826b6c43293473cbd24e7.1583952276.git.amanharitsh123@gmail.com>

On 11/03/2020 20:19, Aman Sharma wrote:

> diff --git a/drivers/pci/controller/pcie-tango.c b/drivers/pci/controller/pcie-tango.c
> index 21a208da3f59..18c2c4313eb5 100644
> --- a/drivers/pci/controller/pcie-tango.c
> +++ b/drivers/pci/controller/pcie-tango.c
> @@ -273,9 +273,9 @@ static int tango_pcie_probe(struct platform_device *pdev)
>  		writel_relaxed(0, pcie->base + SMP8759_ENABLE + offset);
>  
>  	virq = platform_get_irq(pdev, 1);
> -	if (virq <= 0) {
> +	if (virq < 0) {
>  		dev_err(dev, "Failed to map IRQ\n");
> -		return -ENXIO;
> +		return virq;
>  	}
>  
>  	irq_dom = irq_domain_create_linear(fwnode, MSI_MAX, &dom_ops, pcie);


Weee, here we go again :-)

https://patchwork.kernel.org/patch/11066455/
https://patchwork.kernel.org/patch/10006651/

Last time around, my understanding was that, going forward,
the best solution was:

	virq = platform_get_irq(...)
	if (virq <= 0)
		return virq ? : -ENODEV;

i.e. map 0 to -ENODEV, pass other errors as-is, remove the dev_err

@Bjorn/Lorenzo did you have a change of heart?

Regards.

  reply	other threads:[~2020-03-12  9:53 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 19:19 [PATCH 0/5] Handled " Aman Sharma
2020-03-11 19:19 ` [PATCH 1/5] pci: handled " Aman Sharma
2020-03-12 14:07   ` Linus Walleij
2020-03-12 19:02     ` Bjorn Helgaas
2020-03-12 22:45       ` Linus Walleij
2020-03-11 19:19 ` [PATCH 2/5] pci: added check for return value of platform_get_irq Aman Sharma
2020-03-11 19:19 ` [PATCH 3/5] pci: handled return value of platform_get_irq correctly Aman Sharma
2020-03-11 19:19 ` [PATCH 4/5] " Aman Sharma
2020-03-12  9:53   ` Marc Gonzalez [this message]
2020-03-12 14:11     ` Bjorn Helgaas
2020-03-12 15:53       ` Marc Gonzalez
2020-03-13 21:05       ` Thomas Gleixner
2020-03-13 21:56         ` Bjorn Helgaas
2020-03-17 22:03           ` Bjorn Helgaas
2020-03-18 13:42             ` Thomas Gleixner
2020-03-18 22:22               ` Bjorn Helgaas
2020-03-19  8:47                 ` Thomas Gleixner
2020-03-19 21:35                   ` Bjorn Helgaas
2020-03-11 19:19 ` [PATCH 5/5] pci: added check for return value of platform_get_irq Aman Sharma

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