From d9aef1329c29c20d8e0db9929a3235bfb1d718d3 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 4 Sep 2018 17:58:39 +0200
Subject: [PATCH] staging: bcm2835-audio: Kill unused spinlock

commit 5332f6f012c0bf3a45c77dbc0f79814443a884d4 upstream.

The alsa_stream->lock is never used.  Kill it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c | 2 --
 drivers/staging/vc04_services/bcm2835-audio/bcm2835.h     | 2 --
 2 files changed, 4 deletions(-)

--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
@@ -128,8 +128,6 @@ static int snd_bcm2835_playback_open_gen
 	alsa_stream->substream = substream;
 	alsa_stream->idx = idx;
 
-	spin_lock_init(&alsa_stream->lock);
-
 	err = bcm2835_audio_open(alsa_stream);
 	if (err) {
 		kfree(alsa_stream);
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
@@ -119,8 +119,6 @@ struct bcm2835_alsa_stream {
 	struct snd_pcm_substream *substream;
 	struct snd_pcm_indirect pcm_indirect;
 
-	spinlock_t lock;
-
 	int draining;
 
 	int channels;
