linux-kernel - Re: [PATCH] devfreq: tegra: fix error code in tegra_devfreq

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Date:   Mon, 3 Jul 2017 12:35:18 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     "Gustavo A. R. Silva" <garsilva@...eddedor.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Thierry Reding <thierry.reding@...il.com>
CC:     <linux-pm@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] devfreq: tegra: fix error code in tegra_devfreq_probe()


On 30/06/17 08:22, Gustavo A. R. Silva wrote:
> Print and propagate the return value of platform_get_irq on failure.
> 
> Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
> ---
>  drivers/devfreq/tegra-devfreq.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
> index 214fff9..ae71215 100644
> --- a/drivers/devfreq/tegra-devfreq.c
> +++ b/drivers/devfreq/tegra-devfreq.c
> @@ -688,9 +688,9 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
>  	}
>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq <= 0) {
> -		dev_err(&pdev->dev, "Failed to get IRQ\n");
> -		return -ENODEV;
> +	if (irq < 0) {

The changelog does not describe the above change and if/why this is ok.
However, the original test looks fine to me and so I don't see a need to
change this.

> +		dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq);
> +		return irq;

Why not have ...

		return irq ? irq : -ENODEV;

Cheers
Jon

-- 
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