linux-kernel - [PATCH] scsi: elx: efct: Do not use id uninitialized in efct_lio_setup

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Date:   Wed, 16 Jun 2021 23:17:21 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     James Smart <james.smart@...adcom.com>,
        Ram Vegesna <ram.vegesna@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-scsi@...r.kernel.org, target-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH] scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session()

clang warns:

drivers/scsi/elx/efct/efct_lio.c:1216:24: warning: variable 'id' is
uninitialized when used here [-Wuninitialized]
                      se_sess, node, id);
                                     ^~

Shuffle the debug print after id's initialization so that the actual
value is printed.

Fixes: 692e5d73a811 ("scsi: elx: efct: LIO backend interface routines")
Link: https://github.com/ClangBuiltLinux/linux/issues/1397
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
---
 drivers/scsi/elx/efct/efct_lio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/elx/efct/efct_lio.c b/drivers/scsi/elx/efct/efct_lio.c
index e1bab2b17e4d..b7d69ff29c09 100644
--- a/drivers/scsi/elx/efct/efct_lio.c
+++ b/drivers/scsi/elx/efct/efct_lio.c
@@ -1212,12 +1212,12 @@ static void efct_lio_setup_session(struct work_struct *work)
 		return;
 	}
 
-	efc_log_debug(efct, "new initiator sess=%p node=%p id: %llx\n",
-		      se_sess, node, id);
-
 	tgt_node = node->tgt_node;
 	id = (u64) tgt_node->port_fc_id << 32 | tgt_node->node_fc_id;
 
+	efc_log_debug(efct, "new initiator sess=%p node=%p id: %llx\n",
+		      se_sess, node, id);
+
 	if (xa_err(xa_store(&efct->lookup, id, tgt_node, GFP_KERNEL)))
 		efc_log_err(efct, "Node lookup store failed\n");
 

base-commit: ebc076b3eddc807729bd81f7bc48e798a3ddc477
-- 
2.32.0.93.g670b81a890