linux-kernel - [PATCH v3] checkpatch: add --fix option to include linux checks

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Message-Id: <20201206152352.35026-1-dwaipayanray1@gmail.com>
Date:   Sun,  6 Dec 2020 20:53:52 +0530
From:   Dwaipayan Ray <dwaipayanray1@...il.com>
To:     joe@...ches.com
Cc:     linux-kernel-mentees@...ts.linuxfoundation.org,
        dwaipayanray1@...il.com, linux-kernel@...r.kernel.org,
        lukas.bulwahn@...il.com
Subject: [PATCH v3] checkpatch: add --fix option to include linux checks

Add fix option to INCLUDE_LINUX and ARCH_INCLUDE_LINUX
checks to replace asm includes.

Macros of type:
 #include <asm/percpu.h>
 #include <asm/processor.h>

are corrected to:
 #include <linux/percpu.h>
 #include <linux/processor.h>

Signed-off-by: Dwaipayan Ray <dwaipayanray1@...il.com>
---
Changes in v3:
- Add --fix option to ARCH_INCLUDE_LINUX check

Changes in v2:
- Use \Q..\E quoting
- Use @ as regex delimiter

 scripts/checkpatch.pl | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 7b086d1cd6c2..4aecc237ed38 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5558,11 +5558,17 @@ sub process {
 				my $asminclude = `grep -Ec "#include\\s+<asm/$file>" $root/$checkfile`;
 				if ($asminclude > 0) {
 					if ($realfile =~ m{^arch/}) {
-						CHK("ARCH_INCLUDE_LINUX",
-						    "Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+						if (CHK("ARCH_INCLUDE_LINUX",
+							"Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr) &&
+						    $fix) {
+							$fixed[$fixlinenr] =~ s@\Q<asm/$file>\E@<linux/$file>@;
+						}
 					} else {
-						WARN("INCLUDE_LINUX",
-						     "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+						if (WARN("INCLUDE_LINUX",
+							 "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr) &&
+						    $fix) {
+							$fixed[$fixlinenr] =~ s@\Q<asm/$file>\E@<linux/$file>@;
+						}
 					}
 				}
 			}
-- 
2.27.0