linux-kernel - [PATCH v0 30/42] soc/tegra: Check notifier registration return value

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Message-Id: <20211108101157.15189-31-bp@alien8.de>
Date:   Mon,  8 Nov 2021 11:11:45 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     linux-tegra@...r.kernel.or
Subject: [PATCH v0 30/42] soc/tegra: 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-tegra@...r.kernel.or
---
 drivers/soc/tegra/ari-tegra186.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/tegra/ari-tegra186.c b/drivers/soc/tegra/ari-tegra186.c
index 02577853ec49..a25e1b7497e0 100644
--- a/drivers/soc/tegra/ari-tegra186.c
+++ b/drivers/soc/tegra/ari-tegra186.c
@@ -72,8 +72,11 @@ static struct notifier_block tegra186_ari_panic_nb = {
 
 static int __init tegra186_ari_init(void)
 {
-	if (of_machine_is_compatible("nvidia,tegra186"))
-		atomic_notifier_chain_register(&panic_notifier_list, &tegra186_ari_panic_nb);
+	if (of_machine_is_compatible("nvidia,tegra186")) {
+		if (atomic_notifier_chain_register(&panic_notifier_list,
+						   &tegra186_ari_panic_nb))
+			pr_warn("Panic notifier already registered\n");
+	}
 
 	return 0;
 }
-- 
2.29.2