linux-kernel - [PATCH v0 28/42] soc: bcm: brcmstb: pm: pm-arm: Check notifier registration return value

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Date:   Mon,  8 Nov 2021 11:11:43 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     bcm-kernel-feedback-list@...adcom.com
Subject: [PATCH v0 28/42] soc: bcm: brcmstb: pm: pm-arm: 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: bcm-kernel-feedback-list@...adcom.com
---
 drivers/soc/bcm/brcmstb/pm/pm-arm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/bcm/brcmstb/pm/pm-arm.c b/drivers/soc/bcm/brcmstb/pm/pm-arm.c
index 3cbb165d6e30..f80068ec57cb 100644
--- a/drivers/soc/bcm/brcmstb/pm/pm-arm.c
+++ b/drivers/soc/bcm/brcmstb/pm/pm-arm.c
@@ -802,8 +802,9 @@ static int brcmstb_pm_probe(struct platform_device *pdev)
 		goto out;
 	}
 
-	atomic_notifier_chain_register(&panic_notifier_list,
-				       &brcmstb_pm_panic_nb);
+	if (atomic_notifier_chain_register(&panic_notifier_list,
+					   &brcmstb_pm_panic_nb))
+		pr_warn("Panic notifier already registered\n");
 
 	pm_power_off = brcmstb_pm_poweroff;
 	suspend_set_ops(&brcmstb_pm_ops);
-- 
2.29.2