linux-hardening - [PATCH][next] scsi: NCR5380: Fix fall-through warning for Clang

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Date:   Thu, 3 Jun 2021 21:27:52 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Finn Thain <fthain@...ux-m68k.org>,
        Michael Schmitz <schmitzmic@...il.com>,
        "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: NCR5380: Fix fall-through warning for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix
a fall-through warning by replacing a /* fallthrough */ comment
with the new pseudo-keyword macro fallthrough;

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/NCR5380.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 8aa964cd54df..3baadd068768 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -1816,7 +1816,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 				switch (tmp) {
 				case ABORT:
 					set_host_byte(cmd, DID_ABORT);
-					/* fallthrough */
+					fallthrough;
 				case COMMAND_COMPLETE:
 					/* Accept message by clearing ACK */
 					sink = 1;
-- 
2.27.0