checkpatch: Line spacing tests and Kconfig help

index 538105a..4bb4218 100755
@@ -2291,6 +2291,21 @@ sub process {
 			     "networking block comments put the trailing */ on a separate line\n" . $herecurr);
 		}
 
+# check for missing blank lines after struct/union declarations
+# with exceptions for various attributes and macros
+		if ($prevline =~ /^[\+ ]};?\s*$/ &&
+		    !($line =~ /^\+\s*$/ ||
+		      $line =~ /^\+\s*EXPORT_SYMBOL/ ||
+		      $line =~ /^\+\s*MODULE_/i ||
+		      $line =~ /^\+\s*\#\s*(?:end|elif|else)/ ||
+		      $line =~ /^\+[a-z_]*init/ ||
+		      $line =~ /^\+\s*(?:static\s+)?[A-Z_]*ATTR/ ||
+		      $line =~ /^\+\s*DECLARE/ ||
+		      $line =~ /^\+\s*__setup/)) {
+			CHK("LINE_SPACING",
+			    "Please use a blank line after function/struct/union/enum declarations\n" . $hereprev);
+		}
+
 # check for missing blank lines after declarations
 		if ($sline =~ /^\+\s+\S/ &&			#Not at char 1
 			# actual declarations

index 4bb4218..3d6dea6 100755
@@ -1642,6 +1642,8 @@ sub process {
 
 	my $non_utf8_charset = 0;
 
+	my $last_blank_line = 0;
+
 	our @report = ();
 	our $cnt_lines = 0;
 	our $cnt_error = 0;

@@ -2306,6 +2308,15 @@ sub process {
 			    "Please use a blank line after function/struct/union/enum declarations\n" . $hereprev);
 		}
 
+# check for multiple consecutive blank lines
+		if ($prevline =~ /^[\+ ]\s*$/ &&
+		    $line =~ /^\+\s*$/ &&
+		    $last_blank_line != ($linenr - 1)) {
+			CHK("LINE_SPACING",
+			    "Please don't use multiple blank lines\n" . $hereprev);
+			$last_blank_line = $linenr;
+		}
+
 # check for missing blank lines after declarations
 		if ($sline =~ /^\+\s+\S/ &&			#Not at char 1
 			# actual declarations

index 9795844..2a7a32c 100755
@@ -2051,7 +2051,7 @@ sub process {
 # Only applies when adding the entry originally, after that we do not have
 # sufficient context to determine whether it is indeed long enough.
 		if ($realfile =~ /Kconfig/ &&
-		    $line =~ /.\s*config\s+/) {
+		    $line =~ /^\+\s*config\s+/) {
 			my $length = 0;
 			my $cnt = $realcnt;
 			my $ln = $linenr + 1;

@@ -2064,10 +2064,11 @@ sub process {
 				$is_end = $lines[$ln - 1] =~ /^\+/;
 
 				next if ($f =~ /^-/);
+				last if (!$file && $f =~ /^\@\@/);
 
-				if ($lines[$ln - 1] =~ /.\s*(?:bool|tristate)\s*\"/) {
+				if ($lines[$ln - 1] =~ /^\+\s*(?:bool|tristate)\s*\"/) {
 					$is_start = 1;
-				} elsif ($lines[$ln - 1] =~ /.\s*(?:---)?help(?:---)?$/) {
+				} elsif ($lines[$ln - 1] =~ /^\+\s*(?:---)?help(?:---)?$/) {
 					$length = -1;
 				}
 

index 3d6dea6..9795844 100755
@@ -2351,7 +2351,7 @@ sub process {
 		      $sline =~ /^\+\s+\(?\s*(?:$Compare|$Assignment|$Operators)/) &&
 			# indentation of previous and current line are the same
 		    (($prevline =~ /\+(\s+)\S/) && $sline =~ /^\+$1\S/)) {
-			WARN("SPACING",
+			WARN("LINE_SPACING",
 			     "Missing a blank line after declarations\n" . $hereprev);
 		}