linux-hardening - [PATCH 002/141] ASoC: codecs: Fix fall-through warnings for Clang

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Date:   Fri, 20 Nov 2020 12:23:50 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Lars-Peter Clausen <lars@...afoo.de>,
        Nuno Sá <nuno.sa@...log.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        James Schulman <james.schulman@...rus.com>,
        David Rhodes <david.rhodes@...rus.com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        patches@...nsource.cirrus.com, linux-hardening@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH 002/141] ASoC: codecs: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple break statements instead of just
letting the code fall through, and also add fallthrough pseudo-keywords
in places where the code is intended to fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 sound/soc/codecs/adav80x.c | 1 +
 sound/soc/codecs/arizona.c | 1 +
 sound/soc/codecs/cs42l52.c | 1 +
 sound/soc/codecs/cs42l56.c | 1 +
 sound/soc/codecs/cs47l92.c | 1 +
 sound/soc/codecs/wm8962.c  | 1 +
 6 files changed, 6 insertions(+)

diff --git a/sound/soc/codecs/adav80x.c b/sound/soc/codecs/adav80x.c
index 4fd99280d7db..75a649108106 100644
--- a/sound/soc/codecs/adav80x.c
+++ b/sound/soc/codecs/adav80x.c
@@ -373,6 +373,7 @@ static int adav80x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	case SND_SOC_DAIFMT_CBM_CFM:
 		capture |= ADAV80X_CAPTURE_MODE_MASTER;
 		playback |= ADAV80X_PLAYBACK_MODE_MASTER;
+		break;
 	case SND_SOC_DAIFMT_CBS_CFS:
 		break;
 	default:
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 1228f2de0297..e32871b3f68a 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1034,6 +1034,7 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
 				priv->out_down_delay++;
 				break;
 			}
+			break;
 		default:
 			break;
 		}
diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c
index f772628f233e..796b894c390f 100644
--- a/sound/soc/codecs/cs42l52.c
+++ b/sound/soc/codecs/cs42l52.c
@@ -944,6 +944,7 @@ static int cs42l52_beep_event(struct input_dev *dev, unsigned int type,
 	case SND_BELL:
 		if (hz)
 			hz = 261;
+		break;
 	case SND_TONE:
 		break;
 	default:
diff --git a/sound/soc/codecs/cs42l56.c b/sound/soc/codecs/cs42l56.c
index 97024a6ac96d..bb9599cc832b 100644
--- a/sound/soc/codecs/cs42l56.c
+++ b/sound/soc/codecs/cs42l56.c
@@ -1008,6 +1008,7 @@ static int cs42l56_beep_event(struct input_dev *dev, unsigned int type,
 	case SND_BELL:
 		if (hz)
 			hz = 261;
+		break;
 	case SND_TONE:
 		break;
 	default:
diff --git a/sound/soc/codecs/cs47l92.c b/sound/soc/codecs/cs47l92.c
index 6e34106c268f..52dc29942ec2 100644
--- a/sound/soc/codecs/cs47l92.c
+++ b/sound/soc/codecs/cs47l92.c
@@ -201,6 +201,7 @@ static int cs47l92_outclk_ev(struct snd_soc_dapm_widget *w,
 		default:
 			break;
 		}
+		break;
 	default:
 		break;
 	}
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 0bd3bbc2aacf..3af456010b9c 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3203,6 +3203,7 @@ static int wm8962_beep_event(struct input_dev *dev, unsigned int type,
 	case SND_BELL:
 		if (hz)
 			hz = 1000;
+		fallthrough;
 	case SND_TONE:
 		break;
 	default:
-- 
2.27.0