From: Bobby Powers <bobbypowers@xxxxxxxxx>
Subject: headers_check: recursively search for linux/types.h inclusion
headers_check.pl currently emits some spurious warnings, especially for
the drm headers, about using __[us]{8,16,32,64} types without including
linux/types.h. Recursively search for types.h inclusion, avoiding
circular references.
Signed-off-by: Bobby Powers <bobbypowers@xxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxx>
Cc: Michal Marek <mmarek@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/headers_check.pl | 38 ++++++++++++++++++++++++++++++++++++-
1 file changed, 37 insertions(+), 1 deletion(-)
diff -puN scripts/headers_check.pl~headers_check-recursively-search-for-linux-typesh-inclusion scripts/headers_check.pl
--- a/scripts/headers_check.pl~headers_check-recursively-search-for-linux-typesh-inclusion
+++ a/scripts/headers_check.pl
@@ -19,6 +19,7 @@
# 3) Check for leaked CONFIG_ symbols
use strict;
+use File::Basename;
my ($dir, $arch, @files) = @ARGV;
@@ -99,6 +100,39 @@ sub check_asm_types
}
my $linux_types;
+my %import_stack = ();
+sub check_include_typesh
+{
+ my $path = $_[0];
+ my $import_path;
+
+ my $fh;
+ my @file_paths = ($path, $dir . "/" . $path, dirname($filename) . "/" . $path);
+ for my $possible ( @file_paths ) {
+ if (not $import_stack{$possible} and open($fh, '<', $possible)) {
+ $import_path = $possible;
+ $import_stack{$import_path} = 1;
+ last;
+ }
+ }
+ if (eof $fh) {
+ return;
+ }
+
+ my $line;
+ while ($line = <$fh>) {
+ if ($line =~ m/^\s*#\s*include\s+<linux\/types.h>/) {
+ $linux_types = 1;
+ last;
+ }
+ if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) {
+ check_include_typesh($included);
+ }
+ }
+ close $fh;
+ delete $import_stack{$import_path};
+}
+
sub check_sizetypes
{
if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) {
@@ -113,6 +147,9 @@ sub check_sizetypes
$linux_types = 1;
return;
}
+ if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) {
+ check_include_typesh($included);
+ }
if ($line =~ m/__[us](8|16|32|64)\b/) {
printf STDERR "$filename:$lineno: " .
"found __[us]{8,16,32,64} type " .
@@ -122,4 +159,3 @@ sub check_sizetypes
#$ret = 1;
}
}
-
_
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