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checkpatch: add DT compatible string documentation checks

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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 <robh@kernel.org>
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rob Herring 2014-01-23 15:54:51 -08:00 committed by Linus Torvalds
parent 109d8cb200
commit bff5da4335
1 changed files with 27 additions and 0 deletions
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27
scripts/checkpatch.pl
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@ -2040,6 +2040,33 @@ 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)$/);