linux-hardening - [PATCH][next] scsi: mpt3sas: Fix fall-through warnings for Clang

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Date:   Fri, 28 May 2021 15:08:28 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Sathya Prakash <sathya.prakash@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: [PATCH][next] scsi: mpt3sas: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
of warnings by explicitly adding break statements 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 25 in linux-next. These are some of those last remaining
      warnings.

 drivers/scsi/mpt3sas/mpt3sas_base.c  | 1 +
 drivers/scsi/mpt3sas/mpt3sas_scsih.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 68fde055b02f..969c0d676ae2 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -4435,6 +4435,7 @@ _base_display_OEMs_branding(struct MPT3SAS_ADAPTER *ioc)
 				 ioc->pdev->subsystem_device);
 			break;
 		}
+		break;
 	default:
 		break;
 	}
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index d00aca3c77ce..d9d5e9c0e110 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -11932,6 +11932,7 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 				ioc->multipath_on_hba = 1;
 			else
 				ioc->multipath_on_hba = 0;
+			break;
 		default:
 			break;
 		}
-- 
2.27.0