linux-hardening - [PATCH][next] scsi: mpi3mr: Fix fall-through warning for Clang

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Date:   Thu, 3 Jun 2021 21:35:30 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org, Kees Cook <keescook@...omium.org>
Subject: [PATCH][next] scsi: mpi3mr: Fix fall-through warning for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix a
fall-through warning by explicitly adding a break statement instead
of just letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
JFYI: We had thousands of these sorts of warnings and now we are down
      to just 22 in linux-next. This is one of those last remaining
      warnings.

 drivers/scsi/mpi3mr/mpi3mr_os.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index a54aa009ec5a..4ab0609a1b94 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -1732,6 +1732,7 @@ static void mpi3mr_sastopochg_evt_th(struct mpi3mr_ioc *mrioc,
 				atomic_dec_if_positive
 				    (&scsi_tgt_priv_data->block_io);
 			}
+			break;
 		case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
 		default:
 			break;
-- 
2.27.0