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Date:   Sun, 28 Jul 2019 18:51:38 -0500
From:   "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To:     Kukjin Kim <kgene@kernel.org>,
        Krzysztof Kozlowski <krzk@kernel.org>
Cc:     linux-arm-kernel@lists.infradead.org,
        linux-samsung-soc@vger.kernel.org, linux-i2c@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        "Gustavo A. R. Silva" <gustavo@embeddedor.com>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Kees Cook <keescook@chromium.org>
Subject: [PATCH] i2c: s3c2410: Mark expected switch fall-through
Message-ID: <20190728235138.GA23429@embeddedor>
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Mark switch cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/i2c/busses/i2c-s3c2410.c: In function 'i2c_s3c_irq_nextbyte':
drivers/i2c/busses/i2c-s3c2410.c:431:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (i2c->state == STATE_READ)
      ^
drivers/i2c/busses/i2c-s3c2410.c:439:2: note: here
  case STATE_WRITE:
  ^~~~

Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/i2c/busses/i2c-s3c2410.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index d97fb857b0ea..c98ef4c4a0c9 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -435,6 +435,7 @@ static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
 		 * fall through to the write state, as we will need to
 		 * send a byte as well
 		 */
+		/* Fall through */
 
 	case STATE_WRITE:
 		/*
-- 
2.22.0