linux-kernel - Re: [PATCH] backlight: adp5520: fix error handling in adp5520_bl

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Message-ID: <20160805132942.GF5243@dell>
Date:	Fri, 5 Aug 2016 14:29:42 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Alexey Khoroshilov <khoroshilov@...ras.ru>
Cc:	Michael Hennerich <michael.hennerich@...log.com>,
	Jingoo Han <jingoohan1@...il.com>, linux-fbdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: Re: [PATCH] backlight: adp5520: fix error handling in
 adp5520_bl_probe()

On Sat, 09 Jul 2016, Alexey Khoroshilov wrote:

> If adp5520_bl_setup() fails, sysfs group left unremoved.
> 
> By the way, fix overcomplicated assignement of error code.
> 
> Found by Linux Driver Verification project (linuxtesting.org).
> 
> Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
> ---
>  drivers/video/backlight/adp5520_bl.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)

Applied, thanks.

> diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
> index dd88ba1d71ce..35373e2065b2 100644
> --- a/drivers/video/backlight/adp5520_bl.c
> +++ b/drivers/video/backlight/adp5520_bl.c
> @@ -332,10 +332,18 @@ static int adp5520_bl_probe(struct platform_device *pdev)
>  	}
>  
>  	platform_set_drvdata(pdev, bl);
> -	ret |= adp5520_bl_setup(bl);
> +	ret = adp5520_bl_setup(bl);
> +	if (ret) {
> +		dev_err(&pdev->dev, "failed to setup\n");
> +		if (data->pdata->en_ambl_sens)
> +			sysfs_remove_group(&bl->dev.kobj,
> +					&adp5520_bl_attr_group);
> +		return ret;
> +	}
> +
>  	backlight_update_status(bl);
>  
> -	return ret;
> +	return 0;
>  }
>  
>  static int adp5520_bl_remove(struct platform_device *pdev)

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