scripts: checkpatch remove device-tree doc check

Remove checks for device tree documentation as the OpenWrt tree comes
withouth the ./Documentation folder.

Signed-off-by: Paul Spooren <[email protected]>

scripts/checkpatch.pl

@@ -2585,14 +2585,6 @@ sub process {
 
 			if ($realfile !~ /^MAINTAINERS/) {
 				my $last_binding_patch = $is_binding_patch;
-
-				$is_binding_patch = () = $realfile =~ m@^(?:Documentation/devicetree/|include/dt-bindings/)@;
-
-				if (($last_binding_patch != -1) &&
-				    ($last_binding_patch ^ $is_binding_patch)) {
-					WARN("DT_SPLIT_BINDING_PATCH",
-					     "DT binding docs and includes should be a separate patch. See: Documentation/devicetree/bindings/submitting-patches.rst\n");
-				}
 			}
 
 			next;
@@ -2873,14 +2865,6 @@ sub process {
 			     "added, moved or deleted file(s), does MAINTAINERS need updating?\n" . $herecurr);
 		}
 
-# Check for adding new DT bindings not in schema format
-		if (!$in_commit_log &&
-		    ($line =~ /^new file mode\s*\d+\s*$/) &&
-		    ($realfile =~ m@^Documentation/devicetree/bindings/.*\.txt$@)) {
-			WARN("DT_SCHEMA_BINDING_PATCH",
-			     "DT bindings should be in DT schema format. See: Documentation/devicetree/writing-schema.rst\n");
-		}
-
 # Check for wrappage within a valid hunk of the file
 		if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
 			ERROR("CORRUPTED_PATCH",
@@ -3118,37 +3102,6 @@ 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 =~ /\.dtsi?$/ && $line =~ /^\+\s*compatible\s*=\s*\"/) ||
-			 ($realfile =~ /\.[ch]$/ && $line =~ /^\+.*\.compatible\s*=\s*\"/))) {
-
-			my @compats = $rawline =~ /\"([a-zA-Z0-9\-\,\.\+_]+)\"/g;
-
-			my $dt_path = $root . "/Documentation/devicetree/bindings/";
-			my $vp_file = $dt_path . "vendor-prefixes.yaml";
-
-			foreach my $compat (@compats) {
-				my $compat2 = $compat;
-				$compat2 =~ s/\,[a-zA-Z0-9]*\-/\,<\.\*>\-/;
-				my $compat3 = $compat;
-				$compat3 =~ s/\,([a-z]*)[0-9]*\-/\,$1<\.\*>\-/;
-				`grep -Erq "$compat|$compat2|$compat3" $dt_path`;
-				if ( $? >> 8 ) {
-					WARN("UNDOCUMENTED_DT_STRING",
-					     "DT compatible string \"$compat\" appears un-documented -- check $dt_path\n" . $herecurr);
-				}
-
-				next if $compat !~ /^([a-zA-Z0-9\-]+)\,/;
-				my $vendor = $1;
-				`grep -Eq "\\"\\^\Q$vendor\E,\\.\\*\\":" $vp_file`;
-				if ( $? >> 8 ) {
-					WARN("UNDOCUMENTED_DT_STRING",
-					     "DT compatible string vendor \"$vendor\" appears un-documented -- check $vp_file\n" . $herecurr);
-				}
-			}
-		}
-
 # check for using SPDX license tag at beginning of files
 		if ($realline == $checklicenseline) {
 			if ($rawline =~ /^[ \+]\s*\#\!\s*\//) {