[patch] checkpatch: complain about GW-BASIC style label names

[Dan Carpenter]

GW-BASIC style label names are quite common.  This generates a warning
like:

	WARNING: bad label name
	#795: FILE: drivers/ata/pata_mpc52xx.c:795:
	+ err2:

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 89b1df4..ee3fa30 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4023,6 +4023,16 @@ sub process {
 			}
 		}
 
+#avoid GW-BASIC style label names
+		if ($line=~/^\+\s*(err|error|fail|out)[0-9]+:/) {
+			if (WARN("LABEL_NAME",
+				 "bad label name\n" . $herecurr) &&
+			    $fix) {
+				$fixed[$fixlinenr] =~
+				    s/^(.)\s+/$1/;
+			}
+		}
+
 # return is not a function
 		if (defined($stat) && $stat =~ /^.\s*return(\s*)\(/s) {
 			my $spacing = $1;
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