target/linux/brcm2708/patches-4.19/950-0381-staging-bcm2835-audio-Kill-unused-spinlock.patch

   1 From d9aef1329c29c20d8e0db9929a3235bfb1d718d3 Mon Sep 17 00:00:00 2001
   2 From: Takashi Iwai <tiwai@suse.de>
   3 Date: Tue, 4 Sep 2018 17:58:39 +0200
   4 Subject: [PATCH] staging: bcm2835-audio: Kill unused spinlock
   5
   6 commit 5332f6f012c0bf3a45c77dbc0f79814443a884d4 upstream.
   7
   8 The alsa_stream->lock is never used.  Kill it.
   9
  10 Signed-off-by: Takashi Iwai <tiwai@suse.de>
  11 Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
  12 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  13 ---
  14  drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c | 2 --
  15  drivers/staging/vc04_services/bcm2835-audio/bcm2835.h     | 2 --
  16  2 files changed, 4 deletions(-)
  17
  18 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
  19 +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
  20 @@ -128,8 +128,6 @@ static int snd_bcm2835_playback_open_gen
  21         alsa_stream->substream = substream;
  22         alsa_stream->idx = idx;
  23
  24 -       spin_lock_init(&alsa_stream->lock);
  25 -
  26         err = bcm2835_audio_open(alsa_stream);
  27         if (err) {
  28                 kfree(alsa_stream);
  29 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
  30 +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
  31 @@ -119,8 +119,6 @@ struct bcm2835_alsa_stream {
  32         struct snd_pcm_substream *substream;
  33         struct snd_pcm_indirect pcm_indirect;
  34
  35 -       spinlock_t lock;
  36 -
  37         int draining;
  38
  39         int channels;