pcm: Remove superfluous rmb() from PCM meter plugin

rmb() is still left in the code without any actual meaning there just
before the atomic operation.  Let's clean it up.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/src/pcm/pcm_meter.c b/src/pcm/pcm_meter.c
index 1b0ccb4..d71af7a 100644 (file)
--- a/src/pcm/pcm_meter.c
+++ b/src/pcm/pcm_meter.c
@@ -136,7 +136,6 @@ static int snd_pcm_meter_update_scope(snd_pcm_t *pcm)
  _again:
        rptr = *pcm->hw.ptr;
        old_rptr = meter->rptr;
-       rmb();
        if (atomic_read(&meter->reset)) {
                reset = 1;
                atomic_dec(&meter->reset);