[PATCH] ARM: hisi: Add missing of_node_put after of_find_compatible_node

From: Peng Wu <wupeng58@huawei.com>
To: <xuwei5@hisilicon.com>, <linux@armlinux.org.uk>
Cc: <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <liwei391@huawei.com>,
	<wangxiongfeng2@huawei.com>, Peng Wu <wupeng58@huawei.com>
Subject: [PATCH] ARM: hisi: Add missing of_node_put after of_find_compatible_node
Date: Thu, 28 Apr 2022 10:43:06 +0000	[thread overview]
Message-ID: <20220428104306.21682-1-wupeng58@huawei.com> (raw)

of_find_compatible_node  will increment the refcount of the returned
device_node. Calling of_node_put() to avoid the refcount leak

Signed-off-by: Peng Wu <wupeng58@huawei.com>
---
 arch/arm/mach-hisi/platsmp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/mach-hisi/platsmp.c b/arch/arm/mach-hisi/platsmp.c
index a56cc64deeb8..9ce93e0b6cdc 100644
--- a/arch/arm/mach-hisi/platsmp.c
+++ b/arch/arm/mach-hisi/platsmp.c
@@ -67,14 +67,17 @@ static void __init hi3xxx_smp_prepare_cpus(unsigned int max_cpus)
 		}
 		ctrl_base = of_iomap(np, 0);
 		if (!ctrl_base) {
+			of_node_put(np);
 			pr_err("failed to map address\n");
 			return;
 		}
 		if (of_property_read_u32(np, "smp-offset", &offset) < 0) {
+			of_node_put(np);
 			pr_err("failed to find smp-offset property\n");
 			return;
 		}
 		ctrl_base += offset;
+		of_node_put(np);
 	}
 }
 
@@ -160,6 +163,7 @@ static int hip01_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	if (WARN_ON(!node))
 		return -1;
 	ctrl_base = of_iomap(node, 0);
+	of_node_put(node);
 
 	/* set the secondary core boot from DDR */
 	remap_reg_value = readl_relaxed(ctrl_base + REG_SC_CTRL);
-- 
2.17.1


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