linux-kernel - [PATCH] davicom: Annotate implicit fall through in dm9000_set

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Date:   Wed, 16 Jan 2019 20:49:25 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Mathieu Malaterre <malat@...ian.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] davicom: Annotate implicit fall through in dm9000_set_io

There is a plan to build the kernel with -Wimplicit-fallthrough and
this place in the code produced a warning (W=1).

This commit removes the following warning:

  include/linux/device.h:1480:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  drivers/net/ethernet/davicom/dm9000.c:397:3: note: in expansion of macro 'dev_dbg'
  drivers/net/ethernet/davicom/dm9000.c:398:2: note: here

Signed-off-by: Mathieu Malaterre <malat@...ian.org>
---
 drivers/net/ethernet/davicom/dm9000.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index 0a82fcf16d35..c2586f44c29d 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -395,6 +395,7 @@ static void dm9000_set_io(struct board_info *db, int byte_width)
 
 	case 3:
 		dev_dbg(db->dev, ": 3 byte IO, falling back to 16bit\n");
+		/* fall through */
 	case 2:
 		db->dumpblk = dm9000_dumpblk_16bit;
 		db->outblk  = dm9000_outblk_16bit;
-- 
2.19.2