From 8fcc6355feed4a9175da1300da73cce47527e42a Mon Sep 17 00:00:00 2001
From: Petr Vorel <pvorel@suse.cz>
Date: Fri, 4 Sep 2026 13:02:30 +0200
Subject: checkpatch: skip kernel specific checks for userspace

These check are kernel specific, do not warn about it when testing
userspace code:

* BIT_MACRO
* LONG_UDELAY
* MSLEEP
* PREFER_KERNEL_TYPES
* USLEEP_RANGE

This is a follow-up to 99b70ece33d8 ("checkpatch: suppress strscpy
warnings for userspace tools").

Link: https://lore.kernel.org/20260904110230.1219037-5-pvorel@suse.cz
Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
---
 scripts/checkpatch.pl | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'scripts/checkpatch.pl')

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index ead35e6abba7..3614cfe4dcbb 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6696,7 +6696,8 @@ sub process {
 		}
 
 # prefer usleep_range over udelay
-		if ($line =~ /\budelay\s*\(\s*(\d+)\s*\)/) {
+		if (!is_userspace($realfile) &&
+			$line =~ /\budelay\s*\(\s*(\d+)\s*\)/) {
 			my $delay = $1;
 			# ignore udelay's < 10, however
 			if (! ($delay < 10) ) {
@@ -6710,7 +6711,8 @@ sub process {
 		}
 
 # warn about unexpectedly long msleep's
-		if ($line =~ /\bmsleep\s*\((\d+)\);/) {
+		if (!is_userspace($realfile) &&
+			$line =~ /\bmsleep\s*\((\d+)\);/) {
 			if ($1 < 20) {
 				WARN("MSLEEP",
 				     "msleep < 20ms can sleep for up to 20ms; see function description of msleep().\n" . $herecurr);
@@ -6932,7 +6934,7 @@ sub process {
 
 # check for c99 types like uint8_t used outside of uapi/ and tools/
 		if ($realfile !~ m@\binclude/uapi/@ &&
-		    $realfile !~ m@\btools/@ &&
+		    !is_userspace($realfile) &&
 		    $line =~ /\b($Declare)\s*$Ident\s*[=;,\[]/) {
 			my $type = $1;
 			if ($type =~ /\b($typeC99Typedefs)\b/) {
@@ -7182,6 +7184,7 @@ sub process {
 # check usleep_range arguments
 		if ($perl_version_ok &&
 		    defined $stat &&
+		    !is_userspace($realfile) &&
 		    $stat =~ /^\+(?:.*?)\busleep_range\s*\(\s*($FuncArg)\s*,\s*($FuncArg)\s*\)/) {
 			my $min = $1;
 			my $max = $7;
@@ -7425,6 +7428,7 @@ sub process {
 
 # check for #defines like: 1 << <digit> that could be BIT(digit), it is not exported to uapi
 		if ($realfile !~ m@^include/uapi/@ &&
+		    !is_userspace($realfile) &&
 		    $line =~ /#\s*define\s+\w+\s+\(?\s*1\s*([ulUL]*)\s*\<\<\s*(?:\d+|$Ident)\s*\)?/) {
 			my $ull = "";
 			$ull = "_ULL" if (defined($1) && $1 =~ /ll/i);
-- 
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