From c5e7824b578639b244bdb3f96f4d3fcbfb2300ca Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 4 Sep 2018 17:58:37 +0200 Subject: [PATCH] staging: bcm2835-audio: Drop useless running flag and check The running flag of alsa_stream is basically useless. The running state is strictly controlled in ALSA PCM core side, hence the check in PCM trigger and close callbacks are superfluous. Also, the prefill ack at trigger start became superfluous nowadays with the ALSA PCM core update. Let's rip them off. Signed-off-by: Takashi Iwai Tested-by: Stefan Wahren Signed-off-by: Greg Kroah-Hartman --- .../vc04_services/bcm2835-audio/bcm2835-pcm.c | 46 ++++------------------ .../staging/vc04_services/bcm2835-audio/bcm2835.h | 1 - 2 files changed, 8 insertions(+), 39 deletions(-) diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c index 2c2b6b7..b4b9e90 100644 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c @@ -187,19 +187,6 @@ static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream) audio_info("Alsa close\n"); - /* - * Call stop if it's still running. This happens when app - * is force killed and we don't get a stop trigger. - */ - if (alsa_stream->running) { - int err; - - err = bcm2835_audio_stop(alsa_stream); - alsa_stream->running = 0; - if (err) - audio_error(" Failed to STOP alsa device\n"); - } - alsa_stream->period_size = 0; alsa_stream->buffer_size = 0; @@ -324,27 +311,13 @@ static int snd_bcm2835_pcm_trigger(struct snd_pcm_substream *substream, int cmd) switch (cmd) { case SNDRV_PCM_TRIGGER_START: - audio_debug("bcm2835_AUDIO_TRIGGER_START running=%d\n", - alsa_stream->running); - if (!alsa_stream->running) { - err = bcm2835_audio_start(alsa_stream); - if (!err) { - alsa_stream->pcm_indirect.hw_io = - alsa_stream->pcm_indirect.hw_data = - bytes_to_frames(runtime, - alsa_stream->pos); - substream->ops->ack(substream); - alsa_stream->running = 1; - alsa_stream->draining = 1; - } else { - audio_error(" Failed to START alsa device (%d)\n", err); - } - } + err = bcm2835_audio_start(alsa_stream); + if (!err) + alsa_stream->draining = 1; + else + audio_error(" Failed to START alsa device (%d)\n", err); break; case SNDRV_PCM_TRIGGER_STOP: - audio_debug - ("bcm2835_AUDIO_TRIGGER_STOP running=%d draining=%d\n", - alsa_stream->running, runtime->status->state == SNDRV_PCM_STATE_DRAINING); if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { audio_info("DRAINING\n"); alsa_stream->draining = 1; @@ -352,12 +325,9 @@ static int snd_bcm2835_pcm_trigger(struct snd_pcm_substream *substream, int cmd) audio_info("DROPPING\n"); alsa_stream->draining = 0; } - if (alsa_stream->running) { - err = bcm2835_audio_stop(alsa_stream); - if (err != 0) - audio_error(" Failed to STOP alsa device (%d)\n", err); - alsa_stream->running = 0; - } + err = bcm2835_audio_stop(alsa_stream); + if (err != 0) + audio_error(" Failed to STOP alsa device (%d)\n", err); break; default: err = -EINVAL; diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h index 7936326..2a9f3d6 100644 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h @@ -121,7 +121,6 @@ struct bcm2835_alsa_stream { spinlock_t lock; - int running; int draining; int channels; -- 2.7.4