[PATCH 15/29] staging: bcm2835-audio: Drop debug messages in bcm2835-pcm.c

Takashi Iwai
2018-09-04T16:00:12Z

These debug messages worsen the code readability a lot while they give
little debuggability (which we already have via tracing, in anyway).

Let's clean them up. This allows us to reduce the
snd_bcm2835_pcm_lib_ioctl() function to be a direct call of the
snd_pcm_lib_ioctl callback (like most other drivers do), too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
.../vc04_services/bcm2835-audio/bcm2835-pcm.c | 51 +++----------------
1 file changed, 7 insertions(+), 44 deletions(-)

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
index 41bcaff6358b..1f9c940f1cc3 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
@@ -44,9 +44,7 @@ static const struct snd_pcm_hardware snd_bcm2835_playback_spdif_hw = {

static void snd_bcm2835_playback_free(struct snd_pcm_runtime *runtime)
{
- audio_info("Freeing up alsa stream here ..\n");
kfree(runtime->private_data);
- runtime->private_data = NULL;
}

void bcm2835_playback_fifo(struct bcm2835_alsa_stream *alsa_stream)
@@ -99,7 +97,6 @@ static int snd_bcm2835_playback_open_generic(
int err;

mutex_lock(&chip->audio_mutex);
- audio_info("Alsa open (%d)\n", substream->number);
idx = substream->number;

if (spdif && chip->opened) {
@@ -182,8 +179,6 @@ static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream)
runtime = substream->runtime;
alsa_stream = runtime->private_data;

- audio_info("Alsa close\n");
-
alsa_stream->period_size = 0;
alsa_stream->buffer_size = 0;

@@ -251,10 +246,6 @@ static int snd_bcm2835_pcm_prepare(struct snd_pcm_substream *substream)
alsa_stream->pos = 0;
alsa_stream->draining = false;

- audio_debug("buffer_size=%d, period_size=%d pos=%d frame_bits=%d\n",
- alsa_stream->buffer_size, alsa_stream->period_size,
- alsa_stream->pos, runtime->frame_bits);
-
out:
mutex_unlock(&chip->audio_mutex);
return err;
@@ -266,12 +257,8 @@ static void snd_bcm2835_pcm_transfer(struct snd_pcm_substream *substream,
struct snd_pcm_runtime *runtime = substream->runtime;
struct bcm2835_alsa_stream *alsa_stream = runtime->private_data;
void *src = (void *) (substream->runtime->dma_area + rec->sw_data);
- int err;
-
- err = bcm2835_audio_write(alsa_stream, bytes, src);
- if (err)
- audio_error(" Failed to transfer to alsa device (%d)\n", err);

+ bcm2835_audio_write(alsa_stream, bytes, src);
}

static int snd_bcm2835_pcm_ack(struct snd_pcm_substream *substream)
@@ -289,27 +276,18 @@ static int snd_bcm2835_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct bcm2835_alsa_stream *alsa_stream = runtime->private_data;
- int err = 0;

switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
- err = bcm2835_audio_start(alsa_stream);
- if (err)
- audio_error(" Failed to START alsa device (%d)\n", err);
- break;
+ return bcm2835_audio_start(alsa_stream);
case SNDRV_PCM_TRIGGER_DRAIN:
alsa_stream->draining = true;
- break;
+ return 0;
case SNDRV_PCM_TRIGGER_STOP:
- err = bcm2835_audio_stop(alsa_stream);
- if (err)
- audio_error(" Failed to STOP alsa device (%d)\n", err);
- break;
+ return bcm2835_audio_stop(alsa_stream);
default:
- err = -EINVAL;
+ return -EINVAL;
}
-
- return err;
}

/* pointer callback */
@@ -319,31 +297,16 @@ snd_bcm2835_pcm_pointer(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
struct bcm2835_alsa_stream *alsa_stream = runtime->private_data;

- audio_debug("pcm_pointer... (%d) hwptr=%d appl=%d pos=%d\n", 0,
- frames_to_bytes(runtime, runtime->status->hw_ptr),
- frames_to_bytes(runtime, runtime->control->appl_ptr),
- alsa_stream->pos);
-
return snd_pcm_indirect_playback_pointer(substream,
&alsa_stream->pcm_indirect,
alsa_stream->pos);
}

-static int snd_bcm2835_pcm_lib_ioctl(struct snd_pcm_substream *substream,
- unsigned int cmd, void *arg)
-{
- int ret = snd_pcm_lib_ioctl(substream, cmd, arg);
-
- audio_info(" .. substream=%p, cmd=%d, arg=%p (%x) ret=%d\n", substream,
- cmd, arg, arg ? *(unsigned int *)arg : 0, ret);
- return ret;
-}
-
/* operators */
static const struct snd_pcm_ops snd_bcm2835_playback_ops = {
.open = snd_bcm2835_playback_open,
.close = snd_bcm2835_playback_close,
- .ioctl = snd_bcm2835_pcm_lib_ioctl,
+ .ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_bcm2835_pcm_hw_params,
.hw_free = snd_bcm2835_pcm_hw_free,
.prepare = snd_bcm2835_pcm_prepare,
@@ -355,7 +318,7 @@ static const struct snd_pcm_ops snd_bcm2835_playback_ops = {
static const struct snd_pcm_ops snd_bcm2835_playback_spdif_ops = {
.open = snd_bcm2835_playback_spdif_open,
.close = snd_bcm2835_playback_close,
- .ioctl = snd_bcm2835_pcm_lib_ioctl,
+ .ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_bcm2835_pcm_hw_params,
.hw_free = snd_bcm2835_pcm_hw_free,
.prepare = snd_bcm2835_pcm_prepare,
--
2.18.0