linux-kernel - [PATCH v0 26/42] alpha: Check notifier registration return value

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Message-Id: <20211108101157.15189-27-bp@alien8.de>
Date:   Mon,  8 Nov 2021 11:11:41 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     linux-alpha@...r.kernel.org
Subject: [PATCH v0 26/42] alpha: 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-alpha@...r.kernel.org
---
 arch/alpha/kernel/setup.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index b4fbbba30aa2..520c08031137 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -465,8 +465,9 @@ setup_arch(char **cmdline_p)
 	}
 
 	/* Register a call for panic conditions. */
-	atomic_notifier_chain_register(&panic_notifier_list,
-			&alpha_panic_block);
+	if (atomic_notifier_chain_register(&panic_notifier_list,
+					   &alpha_panic_block))
+		pr_warn("Panic notifier already registered\n");
 
 #ifndef alpha_using_srm
 	/* Assume that we've booted from SRM if we haven't booted from MILO.
-- 
2.29.2