linux-kernel - [PATCH 4.14 050/211] nvmet-fcloop: suppress a compiler warning

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Message-Id: <20191127203058.733003261@linuxfoundation.org>
Date:   Wed, 27 Nov 2019 21:29:43 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Bart Van Assche <bvanassche@....org>,
        James Smart <james.smart@...adcom.com>,
        Christoph Hellwig <hch@....de>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 050/211] nvmet-fcloop: suppress a compiler warning

From: Bart Van Assche <bvanassche@....org>

[ Upstream commit 1216e9ef18b84f4fb5934792368fb01eb3540520 ]

Building with W=1 enables the compiler warning -Wimplicit-fallthrough=3. That
option does not recognize the fall-through comment in the fcloop driver. Add
a fall-through comment that is recognized for -Wimplicit-fallthrough=3. This
patch avoids that the compiler reports the following warning when building
with W=1:

drivers/nvme/target/fcloop.c:647:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (op == NVMET_FCOP_READDATA)
      ^

Signed-off-by: Bart Van Assche <bvanassche@....org>
Reviewed-by: James Smart <james.smart@...adcom.com>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvme/target/fcloop.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/target/fcloop.c b/drivers/nvme/target/fcloop.c
index 0b0a4825b3eb1..096523d8dd422 100644
--- a/drivers/nvme/target/fcloop.c
+++ b/drivers/nvme/target/fcloop.c
@@ -535,6 +535,7 @@ fcloop_fcp_op(struct nvmet_fc_target_port *tgtport,
 			break;
 
 		/* Fall-Thru to RSP handling */
+		/* FALLTHRU */
 
 	case NVMET_FCOP_RSP:
 		if (fcpreq) {
-- 
2.20.1