linux-kernel - Re: [PATCH 3/3] thermal: exynos: Defer probe if vtmu is present but not registered

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Date:	Fri, 19 Feb 2016 13:20:14 +0900
From:	Andi Shyti <andi.shyti@...sung.com>
To:	Javier Martinez Canillas <javier@....samsung.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Kukjin Kim <kgene@...nel.org>, linux-pm@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Lukasz Majewski <l.majewski@...sung.com>,
	Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <edubezval@...il.com>
Subject: Re: [PATCH 3/3] thermal: exynos: Defer probe if vtmu is present but
 not registered

Hi Javier,

Just a question...

> diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
> index f4f36bba7be9..f3ce94ec73b5 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -1318,6 +1318,8 @@ static int exynos_tmu_probe(struct platform_device *pdev)
>  			return ret;
>  		}
>  	} else {
> +		if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
> +			return -EPROBE_DEFER;

shouldn't we return also in case of -ENOMEM? -ENOMEM is a Kernel
failure, not depending on the regulator itself.

Andi

>  		dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
>  	}