linux-kernel - [PATCH] drivers: soc: bcm: brcmstb: Add missing of_node

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Date:   Wed, 15 Jun 2022 22:02:31 +0800
From:   Liang He <windhl@....com>
To:     f.fainelli@...il.com, bcm-kernel-feedback-list@...adcom.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        windhl@....com
Subject: [PATCH] drivers: soc: bcm: brcmstb: Add missing of_node_put() in biuctrl.c

In brcmstb_biuctrl_init(), of_find_compatible_node() will return a
node pointer with refcount incremented. We should use of_node_put()
in each fail path or when it is not used anymore.

Signed-off-by: Liang He <windhl@....com>
---
 drivers/soc/bcm/brcmstb/biuctrl.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/soc/bcm/brcmstb/biuctrl.c b/drivers/soc/bcm/brcmstb/biuctrl.c
index 2c975d79fe8e..1467bbd59690 100644
--- a/drivers/soc/bcm/brcmstb/biuctrl.c
+++ b/drivers/soc/bcm/brcmstb/biuctrl.c
@@ -340,12 +340,12 @@ static int __init brcmstb_biuctrl_init(void)
 
 	ret = setup_hifcpubiuctrl_regs(np);
 	if (ret)
-		return ret;
+		goto out_put;
 
 	ret = mcp_write_pairing_set();
 	if (ret) {
 		pr_err("MCP: Unable to disable write pairing!\n");
-		return ret;
+		goto out_put;
 	}
 
 	a72_b53_rac_enable_all(np);
@@ -353,6 +353,9 @@ static int __init brcmstb_biuctrl_init(void)
 #ifdef CONFIG_PM_SLEEP
 	register_syscore_ops(&brcmstb_cpu_credit_syscore_ops);
 #endif
-	return 0;
+	ret = 0;
+out_put:
+	of_node_put(np);
+	return ret;
 }
 early_initcall(brcmstb_biuctrl_init);
-- 
2.25.1