linux-kernel - [PATCH v0 37/42] sparc: Check notifier registration return value

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Message-Id: <20211108101157.15189-38-bp@alien8.de>
Date:   Mon,  8 Nov 2021 11:11:52 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     sparclinux@...r.kernel.org
Subject: [PATCH v0 37/42] sparc: 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: sparclinux@...r.kernel.org
---
 arch/sparc/kernel/sstate.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/sparc/kernel/sstate.c b/arch/sparc/kernel/sstate.c
index 3bcc4ddc6911..4e29e8977609 100644
--- a/arch/sparc/kernel/sstate.c
+++ b/arch/sparc/kernel/sstate.c
@@ -106,8 +106,10 @@ static int __init sstate_init(void)
 
 	do_set_sstate(HV_SOFT_STATE_TRANSITION, booting_msg);
 
-	atomic_notifier_chain_register(&panic_notifier_list,
-				       &sstate_panic_block);
+	if (atomic_notifier_chain_register(&panic_notifier_list,
+					   &sstate_panic_block))
+		pr_warn("Soft state panic notifier already registered\n");
+
 	register_reboot_notifier(&sstate_reboot_notifier);
 
 	return 0;
-- 
2.29.2