semaphore: Remove mutex emulation
Semaphores used as mutexes have been deprecated for years. Now that
all users are either converted to real semaphores or to mutexes remove
the cruft.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
LKML-Reference: <20100907125057.562399240@linutronix.de>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 90b54d4..e3c7fc0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2794,12 +2794,8 @@
WARN("__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr);
}
-# check for semaphores used as mutexes
- if ($line =~ /^.\s*(DECLARE_MUTEX|init_MUTEX)\s*\(/) {
- WARN("mutexes are preferred for single holder semaphores\n" . $herecurr);
- }
-# check for semaphores used as mutexes
- if ($line =~ /^.\s*init_MUTEX_LOCKED\s*\(/) {
+# check for semaphores initialized locked
+ if ($line =~ /^.\s*sema_init.+,\W?0\W?\)/) {
WARN("consider using a completion\n" . $herecurr);
}