checkpatch: Remove checks relating to [smp_]read_barrier_depends()

The [smp_]read_barrier_depends() macros no longer exist, so we don't
need to deal with them in the checkpatch script.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4c82060..8032f80 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5903,8 +5903,7 @@ sub process {
                my $barriers = qr{
                        mb|
                        rmb|
-                       wmb|
-                       read_barrier_depends
+                       wmb
                }x;
                my $barrier_stems = qr{
                        mb__before_atomic|
@@ -5953,12 +5952,6 @@ sub process {
                        }
                }
 
-# check for smp_read_barrier_depends and read_barrier_depends
-               if (!$file && $line =~ /\b(smp_|)read_barrier_depends\s*\(/) {
-                       WARN("READ_BARRIER_DEPENDS",
-                            "$1read_barrier_depends should only be used in READ_ONCE or DEC Alpha code\n" . $herecurr);
-               }
-
 # check of hardware specific defines
                if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
                        CHK("ARCH_DEFINES",