scripts: kernel-doc: fix typedef identification

Some typedef expressions are output as normal functions.

As we need to be clearer about the type with Sphinx 3.x,
detect such cases.

While here, fix a wrongly-indented block.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

scripts/kernel-doc

@@ -1748,30 +1748,48 @@ sub dump_function($$) {
 	return;
     }
 
-	my $prms = join " ", @parameterlist;
-	check_sections($file, $declaration_name, "function", $sectcheck, $prms);
-
-        # This check emits a lot of warnings at the moment, because many
-        # functions don't have a 'Return' doc section. So until the number
-        # of warnings goes sufficiently down, the check is only performed in
-        # verbose mode.
-        # TODO: always perform the check.
-        if ($verbose && !$noret) {
-                check_return_section($file, $declaration_name, $return_type);
-        }
+    my $prms = join " ", @parameterlist;
+    check_sections($file, $declaration_name, "function", $sectcheck, $prms);
+
+    # This check emits a lot of warnings at the moment, because many
+    # functions don't have a 'Return' doc section. So until the number
+    # of warnings goes sufficiently down, the check is only performed in
+    # verbose mode.
+    # TODO: always perform the check.
+    if ($verbose && !$noret) {
+	    check_return_section($file, $declaration_name, $return_type);
+    }
 
-    output_declaration($declaration_name,
-		       'function',
-		       {'function' => $declaration_name,
-			'module' => $modulename,
-			'functiontype' => $return_type,
-			'parameterlist' => \@parameterlist,
-			'parameterdescs' => \%parameterdescs,
-			'parametertypes' => \%parametertypes,
-			'sectionlist' => \@sectionlist,
-			'sections' => \%sections,
-			'purpose' => $declaration_purpose
-		       });
+    # The function parser can be called with a typedef parameter.
+    # Handle it.
+    if ($return_type =~ /typedef/) {
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'typedef' => 1,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    } else {
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    }
 }
 
 sub reset_state {