linux-kernel - [PATCH v0 15/42] scsi: target: Check notifier registration return value

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Message-Id: <20211108101157.15189-16-bp@alien8.de>
Date:   Mon,  8 Nov 2021 11:11:30 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     linux-scsi@...r.kernel.org
Subject: [PATCH v0 15/42] scsi: target: Check notifier registration return value

From: Borislav Petkov <bp@...e.de>

Avoid homegrown notifier registration checks.

No functional changes.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: linux-scsi@...r.kernel.org
---
 drivers/target/tcm_fc/tfc_conf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c
index 1a38c98f681b..28960f68de08 100644
--- a/drivers/target/tcm_fc/tfc_conf.c
+++ b/drivers/target/tcm_fc/tfc_conf.c
@@ -465,7 +465,9 @@ static int __init ft_init(void)
 	if (ret)
 		goto out_unregister_template;
 
-	blocking_notifier_chain_register(&fc_lport_notifier_head, &ft_notifier);
+	if (blocking_notifier_chain_register(&fc_lport_notifier_head, &ft_notifier))
+		pr_warn("FC lport notifier already registered\n");
+
 	fc_lport_iterate(ft_lport_add, NULL);
 	return 0;
 
-- 
2.29.2