linux-kernel - [PATCH v2] checkpatch: Handle FILE pointer type

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Date:   Fri,  2 Sep 2022 13:19:23 +0200
From:   Mickaël Salaün <mic@...ikod.net>
To:     Andy Whitcroft <apw@...onical.com>, Joe Perches <joe@...ches.com>
Cc:     Mickaël Salaün <mic@...ikod.net>,
        Dwaipayan Ray <dwaipayanray1@...il.com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: [PATCH v2] checkpatch: Handle FILE pointer type

When using a "FILE *" type, checkpatch considers this an error:
  ERROR: need consistent spacing around '*' (ctx:WxV)
  #32: FILE: f.c:8:
  +static void a(FILE *const b)
                      ^

Fix this by explicitly defining "FILE" as a common type.  This is useful for
user space patches.

With this patch, we now get:
   <E> <E> <_>WS( )
   <E> <E> <_>IDENT(static)
   <E> <V> <_>WS( )
   <E> <V> <_>DECLARE(void )
   <E> <T> <_>FUNC(a)
   <E> <V> <V>PAREN('(')
   <EV> <N> <_>DECLARE(FILE *const )
   <EV> <T> <_>IDENT(b)
   <EV> <V> <_>PAREN(')') -> V
   <E> <V> <_>WS(
  )
  32 > . static void a(FILE *const b)
  32 > EEVVVVVVVTTTTTVNTTTTTTTTTTTTVVV
  32 >  ______________________________

Cc: Andy Whitcroft <apw@...onical.com>
Cc: Dwaipayan Ray <dwaipayanray1@...il.com>
Cc: Joe Perches <joe@...ches.com>
Cc: Lukas Bulwahn <lukas.bulwahn@...il.com>
Signed-off-by: Mickaël Salaün <mic@...ikod.net>
Link: https://lore.kernel.org/r/20220902111923.1488671-1-mic@digikod.net
---

Changes since v1:
https://lore.kernel.org/r/20220901145948.1456353-1-mic@digikod.net
* Remove the FIXTURE_{DATA,VARIANT}() comments.
* Improve commit description.
---
 scripts/checkpatch.pl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 79e759aac543..e2175102a354 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -576,10 +576,14 @@ our $typeKernelTypedefs = qr{(?x:
 	(?:__)?(?:u|s|be|le)(?:8|16|32|64)|
 	atomic_t
 )};
+our $typeStdioTypedefs = qr{(?x:
+	FILE
+)};
 our $typeTypedefs = qr{(?x:
 	$typeC99Typedefs\b|
 	$typeOtherOSTypedefs\b|
-	$typeKernelTypedefs\b
+	$typeKernelTypedefs\b|
+	$typeStdioTypedefs\b
 )};
 
 our $zero_initializer = qr{(?:(?:0[xX])?0+$Int_type?|NULL|false)\b};

base-commit: b90cb1053190353cc30f0fef0ef1f378ccc063c5
-- 
2.37.2