linux-kernel - [PATCH 10/29] staging: bcm2835-audio: Kill unused spinlock

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Message-Id: <20180904155858.8001-11-tiwai@suse.de>
Date:   Tue,  4 Sep 2018 17:58:39 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Eric Anholt <eric@...olt.net>,
        Stefan Wahren <stefan.wahren@...e.com>,
        linux-rpi-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 10/29] staging: bcm2835-audio: Kill unused spinlock

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

Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
 drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c | 2 --
 drivers/staging/vc04_services/bcm2835-audio/bcm2835.h     | 2 --
 2 files changed, 4 deletions(-)

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
index 00c2abab4bba..fc1b345d206c 100644
--- 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_generic(
 	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);
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
index 2a9f3d6c10dc..20f5ff1649e6 100644
--- 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;
-- 
2.18.0