kbuild: uapi: Drop check_config()

headers_install.sh already tests for CONFIG symbols. It does so in a
more comprehensive way, by only checking for references in code and
also running even if CONFIG_UAPI_HEADER_TEST is disabled.
And check_config() has been disabled any case.

Drop the pointless check.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Link: https://patch.msgid.link/20251230-uapi-check_config-v1-1-00ecec109f39@linutronix.de
Signed-off-by: Nathan Chancellor <nathan@kernel.org>

diff --git a/usr/include/headers_check.pl b/usr/include/headers_check.pl
index af5a513eaa00bb348ccd6ffe6ccbfc973f048834..6cd6eb652c8de4ffb1349e12f38a5e9b2b0e8dee 100755 (executable)
--- a/usr/include/headers_check.pl
+++ b/usr/include/headers_check.pl
@@ -40,7 +40,6 @@ foreach my $file (@files) {
                &check_include();
                &check_asm_types();
                &check_declarations();
-               # Dropped for now. Too much noise &check_config();
        }
        close $fh;
 }
@@ -77,13 +76,6 @@ sub check_declarations
        }
 }
 
-sub check_config
-{
-       if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9_]+)[^a-zA-Z0-9_]/) {
-               printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n";
-       }
-}
-
 my $linux_asm_types;
 sub check_asm_types
 {