linux-kernel - [PATCH] IB/hfi1: Add missing break in switch statement

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Date:   Wed, 20 Feb 2019 19:02:33 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Kaike Wan <kaike.wan@...el.com>,
        Mike Marciniszyn <mike.marciniszyn@...el.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>
Cc:     linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Kees Cook <keescook@...omium.org>
Subject: [PATCH] IB/hfi1: Add missing break in switch statement

Fix the following warning by adding a missing break:

drivers/infiniband/hw/hfi1/tid_rdma.c: In function ‘hfi1_tid_rdma_wqe_interlock’:
drivers/infiniband/hw/hfi1/tid_rdma.c:3251:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
   switch (prev->wr.opcode) {
   ^~~~~~
drivers/infiniband/hw/hfi1/tid_rdma.c:3259:2: note: here
  case IB_WR_RDMA_READ:
  ^~~~

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

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

Fixes: c6c231175ccd ("IB/hfi1: Add interlock between TID RDMA WRITE and other requests")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 drivers/infiniband/hw/hfi1/tid_rdma.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c
index bc2ff83026f7..fdda33aca77f 100644
--- a/drivers/infiniband/hw/hfi1/tid_rdma.c
+++ b/drivers/infiniband/hw/hfi1/tid_rdma.c
@@ -3256,6 +3256,7 @@ bool hfi1_tid_rdma_wqe_interlock(struct rvt_qp *qp, struct rvt_swqe *wqe)
 		default:
 			break;
 		}
+		break;
 	case IB_WR_RDMA_READ:
 		if (prev->wr.opcode != IB_WR_TID_RDMA_WRITE)
 			break;
-- 
2.20.1