linux-kernel - [PATCH AUTOSEL 3.18 1/8] ASoC: ab8500: Mark expected switch fall-through

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Message-Id: <20190427014412.9091-1-sashal@kernel.org>
Date:   Fri, 26 Apr 2019 21:44:04 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 3.18 1/8] ASoC: ab8500: Mark expected switch fall-through

From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>

[ Upstream commit 102cefc8e879b707be0024fdc7bce1deeb359a5f ]

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

In file included from sound/soc/codecs/ab8500-codec.c:24:
sound/soc/codecs/ab8500-codec.c: In function ‘ab8500_codec_set_dai_fmt’:
./include/linux/device.h:1485:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/soc/codecs/ab8500-codec.c:2129:3: note: in expansion of macro ‘dev_err’
   dev_err(dai->component->dev,
   ^~~~~~~
sound/soc/codecs/ab8500-codec.c:2132:2: note: here
  default:
  ^~~~~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/codecs/ab8500-codec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c
index fd43827bb856..daa92a5f8410 100644
--- a/sound/soc/codecs/ab8500-codec.c
+++ b/sound/soc/codecs/ab8500-codec.c
@@ -2131,6 +2131,7 @@ static int ab8500_codec_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 		dev_err(dai->codec->dev,
 			"%s: ERROR: The device is either a master or a slave.\n",
 			__func__);
+		/* fall through */
 	default:
 		dev_err(dai->codec->dev,
 			"%s: ERROR: Unsupporter master mask 0x%x\n",
-- 
2.19.1