linux-kernel - Re: [PATCH v2 3/3] mfd: mt6397: check the EPROBE_DEFER from platform_get

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Date:	Mon, 11 Apr 2016 09:50:39 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Henry Chen <henryc.chen@...iatek.com>
Cc:	Matthias Brugger <matthias.bgg@...il.com>,
	John Crispin <blogic@...nwrt.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Flora Fu <flora.fu@...iatek.com>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2 3/3] mfd: mt6397: check the EPROBE_DEFER from
 platform_get_irq.

On Fri, 08 Apr 2016, Henry Chen wrote:

> If get the -EPROBE_DEFER from platform_get_irq, it should return back directly.
> 
> Signed-off-by: Henry Chen <henryc.chen@...iatek.com>
> ---
>  drivers/mfd/mt6397-core.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
> index 15050cb..b9b1e28 100644
> --- a/drivers/mfd/mt6397-core.c
> +++ b/drivers/mfd/mt6397-core.c
> @@ -271,6 +271,8 @@ static int mt6397_probe(struct platform_device *pdev)
>  	}
>  
>  	pmic->irq = platform_get_irq(pdev, 0);
> +	if (pmic->irq == -EPROBE_DEFER)
> +		return -EPROBE_DEFER;

if (ret < 0)
   return ret;

... is more common, as it covers more bases, etc.

>  	switch (id & 0xff) {
>  	case MT6323_CID_CODE:

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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