linux-kernel - [PATCH v0 38/42] xtensa: Check notifier registration return value

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Message-Id: <20211108101157.15189-39-bp@alien8.de>
Date:   Mon,  8 Nov 2021 11:11:53 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     linux-xtensa@...ux-xtensa.org
Subject: [PATCH v0 38/42] xtensa: 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-xtensa@...ux-xtensa.org
---
 arch/xtensa/platforms/iss/setup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index d3433e1bb94e..00b847e3cb76 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -81,5 +81,6 @@ void __init platform_setup(char **p_cmdline)
 		}
 	}
 
-	atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
+	if (atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block))
+		pr_warn("Panic notifier already registered\n");
 }
-- 
2.29.2