netdev - Re: [PATCH] checkpatch: add double empty line check

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Date:	Fri, 16 Nov 2012 11:55:04 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Eilon Greenstein <eilong@...adcom.com>
cc:	Andy Whitcroft <apw@...onical.com>, linux-kernel@...r.kernel.org,
	Joe Perches <joe@...ches.com>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] checkpatch: add double empty line check

On Fri, 16 Nov 2012, Eilon Greenstein wrote:

> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 21a9f5d..7a9c153 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3579,6 +3579,13 @@ sub process {
>  			WARN("EXPORTED_WORLD_WRITABLE",
>  			     "Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
>  		}
> +
> +# check for double empty lines
> +		if ($line =~ /^\+\s*$/ &&
> +		    ($prevline =~ /^\+?\s*$/ || $rawlines[$linenr] =~ /^\s*$/)) {
> +			WARN("DOUBLE_EMPTY_LINE",
> +			     "One empty line should be sufficient. Consider removing this one.\n" . $herecurr);
> +		}
>  	}
>  
>  	# If we have no input at all, then there is nothing to report on

This is fairly common in all the acpi code where variables declared in a 
function are separated from the code in a function.
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