ALSA: Use fallthrough pseudo-keyword

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200708203236.GA5112@embeddedor
Signed-off-by: Takashi Iwai <tiwai@suse.de>

6 files changed, 9 insertions, 9 deletions

diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index d8f28d030985..ad74ea9cbff5 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -158,7 +158,7 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size,
 		 */
 		dmab->dev.type = SNDRV_DMA_TYPE_DEV;
 #endif /* CONFIG_GENERIC_ALLOCATOR */
-		/* fall through */
+		fallthrough;
 	case SNDRV_DMA_TYPE_DEV:
 	case SNDRV_DMA_TYPE_DEV_UC:
 		snd_malloc_dev_pages(dmab, size);
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 68630244b00f..327ec42a36b0 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -2851,7 +2851,7 @@ static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
 		substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
 		if (substream)
 			break;
-		/* Fall through */
+		fallthrough;
 	case VM_READ:
 		substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
 		break;
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
index 1545f8fdb4db..d5ca161d588c 100644
--- a/sound/core/oss/pcm_plugin.c
+++ b/sound/core/oss/pcm_plugin.c
@@ -357,7 +357,7 @@ snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format,
 				if (snd_mask_test(format_mask, (__force int)format1))
 					return format1;
 			}
-			/* fall through */
+			fallthrough;
 		default:
 			return (__force snd_pcm_format_t)-EINVAL;
 		}
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 1e51c849d3d4..9e0b2d73faf6 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1903,7 +1903,7 @@ static int snd_pcm_prepare(struct snd_pcm_substream *substream,
 	switch (substream->runtime->status->state) {
 	case SNDRV_PCM_STATE_PAUSED:
 		snd_pcm_pause(substream, false);
-		/* fallthru */
+		fallthrough;
 	case SNDRV_PCM_STATE_SUSPENDED:
 		snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
 		break;
@@ -2811,7 +2811,7 @@ static int do_pcm_hwsync(struct snd_pcm_substream *substream)
 	case SNDRV_PCM_STATE_DRAINING:
 		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 			return -EBADFD;
-		/* Fall through */
+		fallthrough;
 	case SNDRV_PCM_STATE_RUNNING:
 		return snd_pcm_update_hw_ptr(substream);
 	case SNDRV_PCM_STATE_PREPARED:
@@ -3814,7 +3814,7 @@ static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area)
 	case SNDRV_PCM_MMAP_OFFSET_STATUS_OLD:
 		if (pcm_file->no_compat_mmap || !IS_ENABLED(CONFIG_64BIT))
 			return -ENXIO;
-		/* fallthrough */
+		fallthrough;
 	case SNDRV_PCM_MMAP_OFFSET_STATUS_NEW:
 		if (!pcm_status_mmap_allowed(pcm_file))
 			return -ENXIO;
@@ -3822,7 +3822,7 @@ static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area)
 	case SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD:
 		if (pcm_file->no_compat_mmap || !IS_ENABLED(CONFIG_64BIT))
 			return -ENXIO;
-		/* fallthrough */
+		fallthrough;
 	case SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW:
 		if (!pcm_control_mmap_allowed(pcm_file))
 			return -ENXIO;
diff --git a/sound/core/seq/oss/seq_oss_timer.c b/sound/core/seq/oss/seq_oss_timer.c
index a35d429e4c27..f9f57232a83f 100644
--- a/sound/core/seq/oss/seq_oss_timer.c
+++ b/sound/core/seq/oss/seq_oss_timer.c
@@ -79,7 +79,7 @@ snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *ev)
 		case TMR_WAIT_REL:
 			parm += rec->cur_tick;
 			rec->realtime = 0;
-			/* fall through */
+			fallthrough;
 		case TMR_WAIT_ABS:
 			if (parm == 0) {
 				rec->realtime = 1;
diff --git a/sound/core/seq/seq_midi_emul.c b/sound/core/seq/seq_midi_emul.c
index 198f285594e3..81d2ef5e5811 100644
--- a/sound/core/seq/seq_midi_emul.c
+++ b/sound/core/seq/seq_midi_emul.c
@@ -309,7 +309,7 @@ do_control(const struct snd_midi_op *ops, void *drv,
 		break;
 	case MIDI_CTL_MSB_DATA_ENTRY:
 		chan->control[MIDI_CTL_LSB_DATA_ENTRY] = 0;
-		/* fall through */
+		fallthrough;
 	case MIDI_CTL_LSB_DATA_ENTRY:
 		if (chan->param_type == SNDRV_MIDI_PARAM_TYPE_REGISTERED)
 			rpn(ops, drv, chan, chset);