checkpatch: add check for whitespace before semicolon at end-of-line

This tests for a bad habits of mine like this:

	return 0 ;

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>

diff --git a/tools/checkpatch.pl b/tools/checkpatch.pl
index 2048a44..c7475f9 100755 (executable)
--- a/tools/checkpatch.pl
+++ b/tools/checkpatch.pl
@@ -3139,6 +3139,12 @@ sub process {
                         "Statements terminations use 1 semicolon\n" . $herecurr);
                }
 
+# check for whitespace before semicolon - not allowed at end-of-line
+               if ($line =~ /\s+;$/) {
+                   WARN("SPACEBEFORE_SEMICOLON",
+                        "Whitespace before semicolon\n" . $herecurr);
+               }
+
 # check for gcc specific __FUNCTION__
                if ($line =~ /__FUNCTION__/) {
                        WARN("USE_FUNC",