From: Rob Herring <rob.herr...@calxeda.com>
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.herr...@calxeda.com>
Signed-off-by: Joe Perches <j...@perches.com>
Cc: Grant Likely <grant.lik...@linaro.org>
Cc: Andy Whitcroft <a...@canonical.com>
---
v4:
- Fix handling of no source tree or user-specified source tree
- Check for presence of vendor-prefixes.txt
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 | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 9c98100..e6635bb 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2034,6 +2034,33 @@ sub process {
"Use of $flag is deprecated, please use
\`$replacement->{$flag} instead.\n" . $herecurr) if ($replacement->{$flag});
}
+# check for DT compatible documentation
+ if (defined $root && $realfile =~ /\.dts/ &&
+ $rawline =~ /^\+\s*compatible\s*=/) {
+ my @compats = $rawline =~
/\"([a-zA-Z0-9\-\,\.\+_]+)\"/g;
+
+ foreach my $compat (@compats) {
+ my $compat2 = $compat;
+ my $dt_path = $root .
"/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";
+ next if (! -f $vendor_path);
+ $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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