+ checkpatch-ignore-inttypesh-format-macros-for-userspace-tools.patch added to mm-nonmm-unstable branch

+ checkpatch-ignore-inttypesh-format-macros-for-userspace-tools.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: checkpatch: ignore <inttypes.h> format macros for userspace tools
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     checkpatch-ignore-inttypesh-format-macros-for-userspace-tools.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/checkpatch-ignore-inttypesh-format-macros-for-userspace-tools.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Petr Vorel <pvorel@suse.cz>
Subject: checkpatch: ignore <inttypes.h> format macros for userspace tools
Date: Fri, 4 Sep 2026 13:02:28 +0200

Constants from <inttypes.h> are used only in userspace tools, they are
from ISO C99, let's don't report it:

    arch/mips/boot/tools/relocs.c:572: CHECK: Avoid CamelCase: <PRIx32>
    arch/s390/tools/relocs.c:52: CHECK: Avoid CamelCase: <PRIu64>
    tools/testing/selftests/mm/vm_util.c:244: CHECK: Avoid CamelCase: <SCNu64>

Link: https://lore.kernel.org/20260904110230.1219037-3-pvorel@suse.cz
Signed-off-by: Petr Vorel <pvorel@suse.cz>
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/checkpatch.pl |    2 ++
 1 file changed, 2 insertions(+)

--- a/scripts/checkpatch.pl~checkpatch-ignore-inttypesh-format-macros-for-userspace-tools
+++ a/scripts/checkpatch.pl
@@ -5950,6 +5950,8 @@ sub process {
 #Ignore SI style variants like nS, mV and dB
 #(ie: max_uV, regulator_min_uA_show, RANGE_mA_VALUE)
 			    $var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&
+#Ignore <inttypes.h> format macros (e.g. PRIu64, SCNu64)
+			    (is_userspace($realfile) ? $var !~ /^(?:PRI|SCN)[dioux][A-Z0-9]+$/ : 1) &&
 #Ignore some three character SI units explicitly, like MiB and KHz
 			    $var !~ /^(?:[a-z_]*?)_?(?:[KMGT]iB|[KMGT]?Hz)(?:_[a-z_]+)?$/) {
 				while ($var =~ m{\b($Ident)}g) {
_

Patches currently in -mm which might be from pvorel@suse.cz are

checkpatch-skip-camelcase-cache-for-no-tree-without-root.patch
checkpatch-add-more-userspace-directories-to-is_userspace.patch
checkpatch-ignore-inttypesh-format-macros-for-userspace-tools.patch
checkpatch-add-userspace-to-force-userspace-rules.patch
checkpatch-skip-kernel-specific-checks-for-userspace.patch