1 files changed, 48 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a892a6cc7c..18e16b79df 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1569,6 +1569,54 @@ sub process {
 # check we are in a valid C source file if not then ignore this hunk
 		next if ($realfile !~ /\.(h|c|cpp)$/);
 
+# Block comment styles
+
+		# Block comments use /* on a line of its own
+		if ($rawline !~ m@^\+.*/\*.*\*/[ \t]*$@ &&	#inline /*...*/
+		    $rawline =~ m@^\+.*/\*\*?[ \t]*.+[ \t]*$@) { # /* or /** non-blank
+			WARN("Block comments use a leading /* on a separate line\n" . $herecurr);
+		}
+
+# Block comments use * on subsequent lines
+		if ($prevline =~ /$;[ \t]*$/ &&			#ends in comment
+		    $prevrawline =~ /^\+.*?\/\*/ &&		#starting /*
+		    $prevrawline !~ /\*\/[ \t]*$/ &&		#no trailing */
+		    $rawline =~ /^\+/ &&			#line is new
+		    $rawline !~ /^\+[ \t]*\*/) {		#no leading *
+			WARN("Block comments use * on subsequent lines\n" . $hereprev);
+		}
+
+# Block comments use */ on trailing lines
+		if ($rawline !~ m@^\+[ \t]*\*/[ \t]*$@ &&	#trailing */
+		    $rawline !~ m@^\+.*/\*.*\*/[ \t]*$@ &&	#inline /*...*/
+		    $rawline !~ m@^\+.*\*{2,}/[ \t]*$@ &&	#trailing **/
+		    $rawline =~ m@^\+[ \t]*.+\*\/[ \t]*$@) {	#non blank */
+			WARN("Block comments use a trailing */ on a separate line\n" . $herecurr);
+		}
+
+# Block comment * alignment
+		if ($prevline =~ /$;[ \t]*$/ &&			#ends in comment
+		    $line =~ /^\+[ \t]*$;/ &&			#leading comment
+		    $rawline =~ /^\+[ \t]*\*/ &&		#leading *
+		    (($prevrawline =~ /^\+.*?\/\*/ &&		#leading /*
+		      $prevrawline !~ /\*\/[ \t]*$/) ||		#no trailing */
+		     $prevrawline =~ /^\+[ \t]*\*/)) {		#leading *
+			my $oldindent;
+			$prevrawline =~ m@^\+([ \t]*/?)\*@;
+			if (defined($1)) {
+				$oldindent = expand_tabs($1);
+			} else {
+				$prevrawline =~ m@^\+(.*/?)\*@;
+				$oldindent = expand_tabs($1);
+			}
+			$rawline =~ m@^\+([ \t]*)\*@;
+			my $newindent = $1;
+			$newindent = expand_tabs($newindent);
+			if (length($oldindent) ne length($newindent)) {
+				WARN("Block comments should align the * on each line\n" . $hereprev);
+			}
+		}
+
 # Check for potential 'bare' types
 		my ($stat, $cond, $line_nr_next, $remain_next, $off_next,
 		    $realline_next);