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ASoC: samsung: add missing "fallthrough;" 

With gcc, we get a warning in this file:

In file included from include/linux/io.h:13,
                 from sound/soc/samsung/s3c-i2s-v2.c:16:
sound/soc/samsung/s3c-i2s-v2.c: In function 's3c2412_i2s_trigger':
arch/arm/include/asm/io.h:92:22: error: this statement may fall through [-Werror=implicit-fallthrough=]
 #define __raw_writel __raw_writel
                      ^
arch/arm/include/asm/io.h:299:29: note: in expansion of macro '__raw_writel'
 #define writel_relaxed(v,c) __raw_writel((__force u32) cpu_to_le32(v),c)
                             ^~~~~~~~~~~~
arch/arm/include/asm/io.h:307:36: note: in expansion of macro 'writel_relaxed'
 #define writel(v,c)  ({ __iowmb(); writel_relaxed(v,c); })
                                    ^~~~~~~~~~~~~~
sound/soc/samsung/s3c-i2s-v2.c:398:3: note: in expansion of macro 'writel'
   writel(0x0, i2s->regs + S3C2412_IISFIC);
   ^~~~~~
sound/soc/samsung/s3c-i2s-v2.c:400:2: note: here
  case SNDRV_PCM_TRIGGER_RESUME:
  ^~~~

From all I can tell, this was indeed meant to fall through, so
add "fallthrough;" statement to avoid the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210927095449.1070639-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Arnd Bergmann 2021-09-27 11:54:34 +02:00 committed by Mark Brown
parent 3e8908fbfd
commit 501849d97e
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 0 deletions
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sound/soc/samsung/s3c-i2s-v2.c
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@ -397,6 +397,8 @@ static int s3c2412_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
/* clear again, just in case */
writel(0x0, i2s->regs + S3C2412_IISFIC);
fallthrough;
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (!i2s->master) {