Re: [PATCH v2] devfreq: tegra: fix error return code in tegra_devfreq_probe()

[Jon Hunter]

On 03/07/17 13:47, Gustavo A. R. Silva wrote:
> platform_get_irq() returns an error code, but the tegra-devfreq
> driver ignores it and always returns -ENODEV. This is not correct,
> and prevents -EPROBE_DEFER from being propagated properly.
> 
> Notice that platform_get_irq() no longer returns 0 on error:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af
> 
> Print and propagate the return value of platform_get_irq on failure.
> 
> Reviewed-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> Acked-by: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>
> Signed-off-by: Gustavo A. R. Silva <garsilva@xxxxxxxxxxxxxx>
> ---
> Changes in v2:
>  Rewrite commit message.
> 
>  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) {
> +		dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq);
> +		return irq;
>  	}
>  
>  	platform_set_drvdata(pdev, tegra);

Thanks.

Acked-by: Jon Hunter <jonathanh@xxxxxxxxxx>

Cheers
Jon

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