linux-kernel - Re: [PATCH] checkpatch: Fix checks for Kconfig help text

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Message-ID: <20171110063939.GD2349@leoy-linaro>
Date:   Fri, 10 Nov 2017 14:39:39 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Andy Whitcroft <apw@...onical.com>, Joe Perches <joe@...ches.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] checkpatch: Fix checks for Kconfig help text

On Fri, Nov 10, 2017 at 02:32:37PM +0800, Leo Yan wrote:
> If one patch has Kconfig section with only one 'config', then variable
> '$is_start' will be set by first 'config' line and '$is_end' set by the
> second 'config' line. But patches often has only one 'config' line so
> we have no chance to set '$is_end', as result below condition is invalid
> and it skips check for Kconfig description:

Sorry for the bad commit log, I will send v2 for this.

> 	if ($is_start && $is_end && $length < $min_conf_desc_length) {
> 		......
> 	}
> 
> When script runs to this condition sentence it means the Kconfig
> section parsing has been completed, whatever '$is_end' is true
> or not. So removes '$is_end' from condition sentence.
> 
> Another change is to change '$min_conf_desc_length' from 4 to 1; so can
> pass the check if the Kconfig description has at least one line.
> 
> Signed-off-by: Leo Yan <leo.yan@...aro.org>
> ---
>  scripts/checkpatch.pl | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 3453df9..ba724b0 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -51,7 +51,7 @@ my $configuration_file = ".checkpatch.conf";
>  my $max_line_length = 80;
>  my $ignore_perl_version = 0;
>  my $minimum_perl_version = 5.10.0;
> -my $min_conf_desc_length = 4;
> +my $min_conf_desc_length = 1;
>  my $spelling_file = "$D/spelling.txt";
>  my $codespell = 0;
>  my $codespellfile = "/usr/share/codespell/dictionary.txt";
> @@ -2796,7 +2796,7 @@ sub process {
>  				}
>  				$length++;
>  			}
> -			if ($is_start && $is_end && $length < $min_conf_desc_length) {
> +			if ($is_start && $length < $min_conf_desc_length) {
>  				WARN("CONFIG_DESCRIPTION",
>  				     "please write a paragraph that describes the config symbol fully\n" . $herecurr);
>  			}
> -- 
> 2.7.4
>