linux-kernel - [PATCH] checkpatch: add judgment condition for Kconfig help test

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Date:   Thu, 16 Nov 2023 23:39:04 +0800
From:   Cixi Geng <cixi.geng@...ux.dev>
To:     apw@...onical.com, joe@...ches.co, dwaipayanray1@...il.com,
        lukas.bulwahn@...il.com, akpm@...ux-foundation.org,
        rdunlap@...radead.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] checkpatch: add judgment condition for Kconfig help test

From: Cixi Geng <cixi.geng1@...soc.com>

The has_help only counted the  situation which the patch file add
a help line, when the config was renamed and  modify description,
the has_help is zero for the "help" line not added.

here is one case:
    the modify file: drivers/iio/adc/Kconfig  line(1047)

    -config SC27XX_ADC
    +config SPRD_ADC
     	tristate "Spreadtrum SC27xx series PMICs ADC"
     	depends on MFD_SC27XX_PMIC || COMPILE_TEST
    +	depends on ARCH_SPRD
     	help
    -	  Say yes here to build support for the integrated ADC inside the
    -	  Spreadtrum SC27xx series PMICs.
    +	  Say yes here to build support for the integrated ADC inside of the
    +	  Spreadtrum SC27xx and UMPxx series PMICs.

     	  This driver can also be built as a module. If so, the module
     	  will be called sc27xx_adc.

the checkpatch result:
    WARNING: please write a help paragraph that fully describes the config symbol
    #23: FILE: drivers/iio/adc/Kconfig:1050:
    +config SPRD_ADC
    +	tristate "Spreadtrum's ADC PMICs driver"
     	depends on MFD_SC27XX_PMIC || COMPILE_TEST
    +	depends on ARCH_SPRD
     	help
    +	  Say yes here to build support for the integrated ADC inside of the
    +	  Say yes here to build support for the integrated ADC inside of the
    +	  Say yes here to build support for the integrated ADC inside of the
    +	  Spreadtrum SC27xx and UMPxx series PMICs.

     	  This driver can also be built as a module. If so, the module
     	  will be called sc27xx_adc.

    total: 0 errors, 1 warnings, 17 lines checked

Fixes: b8709bce9089 ("checkpatch: improve Kconfig help test")
Signed-off-by: Cixi Geng <cixi.geng1@...soc.com>
---
 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 25fdb7fda112..402009d08505 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3616,7 +3616,7 @@ sub process {
 					$needs_help = 1;
 					next;
 				}
-				if ($f =~ /^\+\s*help\s*$/) {
+				if ($f =~ /^\+\s*help\s*$/ || $f =~ /^\s*help\s*$/) {
 					$has_help = 1;
 					next;
 				}
-- 
2.34.1