linux-kernel - [PATCH] iscsi: iscsi_target: fix clang -Wformat warning

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Message-Id: <20220708221314.466294-1-justinstitt@google.com>
Date:   Fri,  8 Jul 2022 15:13:14 -0700
From:   Justin Stitt <justinstitt@...gle.com>
To:     "Martin K . Petersen" <martin.petersen@...cle.com>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Mike Christie <michael.christie@...cle.com>,
        Max Gurtovoy <mgurtovoy@...dia.com>,
        Mingzhe Zou <mingzhe.zou@...ystack.cn>,
        Justin Stitt <justinstitt@...gle.com>,
        linux-scsi@...r.kernel.org, target-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH] iscsi: iscsi_target: fix clang -Wformat warning

When building with Clang we encounter this warning:
| drivers/target/iscsi/iscsi_target.c:4365:12: error: format specifies
| type 'unsigned short' but the argument has type 'int' [-Werror,-Wformat]
| " %s\n", atomic_read(&sess->nconn)

The format specifier used is `%hu` which describes an unsigned short.
However, atomic_read returns an int which means the format specifier
should be `%d`.

Link: https://github.com/ClangBuiltLinux/linux/issues/378
Signed-off-by: Justin Stitt <justinstitt@...gle.com>
---
 drivers/target/iscsi/iscsi_target.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index e368f038ff5c..bfb717065344 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -4361,7 +4361,7 @@ int iscsit_close_connection(
 
 	spin_lock_bh(&sess->conn_lock);
 	atomic_dec(&sess->nconn);
-	pr_debug("Decremented iSCSI connection count to %hu from node:"
+	pr_debug("Decremented iSCSI connection count to %d from node:"
 		" %s\n", atomic_read(&sess->nconn),
 		sess->sess_ops->InitiatorName);
 	/*
-- 
2.37.0.rc0.161.g10f37bed90-goog