linux-kernel - Re: [PATCH v2] checkpatch: Fix checks for Kconfig help text

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Date:   Fri, 10 Nov 2017 05:42:27 -0800
From:   Joe Perches <joe@...ches.com>
To:     Leo Yan <leo.yan@...aro.org>, Andy Whitcroft <apw@...onical.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] checkpatch: Fix checks for Kconfig help text

On Fri, 2017-11-10 at 14:42 +0800, Leo Yan wrote:
> If one patch has Kconfig section, the check script variable '$is_start'
> will be set by first 'config' line and the variable '$is_end' is to be
> set by the second 'config' line. But patches often only has one
> 'config' line so we have no chance to set '$is_end', as result below
> condition is invalid and it skips check for Kconfig description:
> 
> 	if ($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 Kconfig description has at least one line.

Hello Leo.

I do not like this.

Separate changes please and that $min_conf_desc_length
change is definitely not a fix.  It's a preference.

> diff --git 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);
>  			}