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* [PATCH v3] checkpatch: add DT compatible string documentation checks
@ 2013-12-04 16:03 Rob Herring
       [not found] ` <1386173031-17867-1-git-send-email-robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
  0 siblings, 1 reply; 4+ messages in thread
From: Rob Herring @ 2013-12-04 16:03 UTC (permalink / raw)
  To: linux-kernel-u79uwXL29TY76Z2rM5mHXA,
	devicetree-u79uwXL29TY76Z2rM5mHXA
  Cc: Rob Herring, Grant Likely, Andy Whitcroft, Joe Perches

From: Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>

This adds a simple check that any compatible strings in DeviceTree dts
files are present in Documentation/devicetree/bindings. Vendor prefixes
are also checked for existing in vendor-prefixes.txt These should be
temporary checks until we have more sophisticated binding schema checking.

Signed-off-by: Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>
Cc: Grant Likely <grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Andy Whitcroft <apw-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
Cc: Joe Perches <joe-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org>
---
v3:
- Use a single message type UNDOCUMENTED_DT_STRING
- Ensure '+' is at beginning of the line
- Move vendor-prefixes.txt to variable

v2:
- Add vendor string checking against vendor-prefixes.txt
- Add '_', '.' and '+' as valid compatible string characters
- Use 'grep -E' instead of egrep

 scripts/checkpatch.pl | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 9c98100..3696366 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2034,6 +2034,31 @@ sub process {
 			     "Use of $flag is deprecated, please use \`$replacement->{$flag} instead.\n" . $herecurr) if ($replacement->{$flag});
 		}
 
+# check for DT compatible documentation
+		if ($realfile =~ /\.dts/ && $rawline =~ /^\+\s*compatible\s*=/) {
+			my @compats = $rawline =~ /\"([a-zA-Z0-9\-\,\.\+_]+)\"/g;
+
+			foreach my $compat (@compats) {
+				my $compat2 = $compat;
+				my $dt_path = "Documentation/devicetree/bindings/";
+				$compat2 =~ s/\,[a-z]*\-/\,<\.\*>\-/;
+				`grep -Erq "$compat|$compat2" $dt_path`;
+				if ( $? >> 8 ) {
+					WARN("UNDOCUMENTED_DT_STRING",
+					     "DT compatible string \"$compat\" appears un-documented -- check $dt_path\n" . $herecurr);
+				}
+
+				my $vendor = $compat;
+				my $vendor_path = $dt_path . "vendor-prefixes.txt";
+				$vendor =~ s/^([a-zA-Z0-9]+)\,.*/$1/;
+				`grep -Eq "$vendor" $vendor_path`;
+				if ( $? >> 8 ) {
+					WARN("UNDOCUMENTED_DT_STRING",
+					     "DT compatible string vendor \"$vendor\" appears un-documented -- check $vendor_path\n" . $herecurr);
+				}
+			}
+		}
+
 # check we are in a valid source file if not then ignore this hunk
 		next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
 
-- 
1.8.3.2

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^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2013-12-06 16:48 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2013-12-04 16:03 [PATCH v3] checkpatch: add DT compatible string documentation checks Rob Herring
     [not found] ` <1386173031-17867-1-git-send-email-robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-12-04 16:12   ` Joe Perches
2013-12-06  9:56     ` Andy Whitcroft
2013-12-06 16:48       ` Joe Perches

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