Using BUG/BUG_ON crashes the kernel and is just unfriendly.
Enable code that emits a warning on BUG/BUG_ON use.
Make the code emit the message at WARNING level when scanning
a patch and at CHECK level when scanning files so that script
users don't feel an obligation to fix code that might be above
their pay grade.
Signed-off-by: Joe Perches <j...@perches.com>
Noticed-by: Geert Uytterhoeven <ge...@linux-m68k.org>
Tested-by: Geert Uytterhoeven <ge...@linux-m68k.org>
---
scripts/checkpatch.pl | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 90e1edc..9448da1 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3439,13 +3439,15 @@ sub process {
}
}
-# # no BUG() or BUG_ON()
-# if ($line =~ /\b(BUG|BUG_ON)\b/) {
-# print "Try to use WARN_ON & Recovery code rather than
BUG() or BUG_ON()\n";
-# print "$herecurr";
-# $clean = 0;
-# }
+# avoid BUG() or BUG_ON()
+ if ($line =~ /\b(?:BUG|BUG_ON)\b/) {
+ my $msg_type = \&WARN;
+ $msg_type = \&CHK if ($file);
+ &{$msg_type}("AVOID_BUG",
+ "Avoid crashing the kernel - try using
WARN_ON & recovery code rather than BUG() or BUG_ON()\n" . $herecurr);
+ }
+# avoid LINUX_VERSION_CODE
if ($line =~ /\bLINUX_VERSION_CODE\b/) {
WARN("LINUX_VERSION_CODE",
"LINUX_VERSION_CODE should be avoided, code should
be for the version to which it is merged\n" . $herecurr);
--
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