linux-kernel - Re: [PATCH 33/33] Staging: android: ion: ion.c: Compression of lines for

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Date:	Fri, 29 Jul 2016 14:14:23 -0700
From:	Joe Perches <joe@...ches.com>
To:	Nadim almas <nadim.902@...il.com>, labbott@...hat.com
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...verdev.osuosl.org
Subject: Re: [PATCH 33/33] Staging: android: ion: ion.c: Compression of
 lines for

On Fri, 2016-07-29 at 14:06 -0700, Nadim almas wrote:
> This patch compresses two lines in to a single line in file rtw_android.c
> if immediate return statement is found. It also removes variable 
> bytes_written as it is no longer needed.
> 
> It is done using script Coccinelle. And coccinelle uses following semantic
> patch for this compression function:
[]
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
[]
> @@ -391,9 +391,7 @@ static int ion_handle_put_nolock(struct ion_handle *handle)
>  {
>  	int ret;
>  
> -	ret = kref_put(&handle->ref, ion_handle_destroy);
> -
> -	return ret;
> +        return kref_put(&handle->ref, ion_handle_destroy);
>  }

int ret; is now unused.

Please make sure you compile the files modified by any script
and remove any newly introduced warnings.


>  static int ion_handle_put(struct ion_handle *handle)
> @@ -597,8 +595,8 @@ int ion_phys(struct ion_client *client, struct ion_handle *handle,
>  		return -ENODEV;
>  	}
>  	mutex_unlock(&client->lock);
> -	ret = buffer->heap->ops->phys(buffer->heap, buffer, addr, len);
> -	return ret;
> +	
> +        return buffer->heap->ops->phys(buffer->heap, buffer, addr, len);
>  }
>  EXPORT_SYMBOL(ion_phys);