linux-kernel - Re: [PATCH V2 2/3] staging: android: ion

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Date:	Fri, 3 Apr 2015 15:13:23 +0200
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Phong Tran <tranmanphong@...il.com>
Cc:	arve@...roid.com, riandrews@...roid.com, dan.carpenter@...cle.com,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 2/3] staging: android: ion_test: unregister the misc
 device

On Thu, Apr 02, 2015 at 09:36:06PM +0700, Phong Tran wrote:
> Add the remove() method for deregister from misc device
> when it's unloaded.
> 
> Signed-off-by: Phong Tran <tranmanphong@...il.com>
> ---
>  drivers/staging/android/ion/ion_test.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/staging/android/ion/ion_test.c b/drivers/staging/android/ion/ion_test.c
> index 3bc461c..d6a9653 100644
> --- a/drivers/staging/android/ion/ion_test.c
> +++ b/drivers/staging/android/ion/ion_test.c
> @@ -261,7 +261,19 @@ static int __init ion_test_probe(struct platform_device *pdev)
>  	return 0;
>  }
>  
> +static int ion_test_remove(struct platform_device *pdev)
> +{
> +	struct ion_test_device *testdev;
> +
> +	testdev = platform_get_drvdata(pdev);
> +	if (!testdev)
> +		return -ENODATA;
> +
> +	return  misc_deregister(&testdev->misc);

Extra space here :(

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