linux-kernel - [PATCH] sparc: Fix a reference leak in central_build

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Message-Id: <20250915135201.187119-1-haoxiang_li2024@163.com>
Date: Mon, 15 Sep 2025 21:52:01 +0800
From: Haoxiang Li <haoxiang_li2024@....com>
To: davem@...emloft.net,
	andreas@...sler.com,
	haoxiang_li2024@....com
Cc: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: [PATCH] sparc: Fix a reference leak in central_build_irq()

Call put_device() once central_op is no longer needed, preventing
a reference leak.

Fixes: 5fce09c6f636 ("sparc: Move irq_trans_init() and support code into seperate file.")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@....com>
---
 arch/sparc/kernel/prom_irqtrans.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/sparc/kernel/prom_irqtrans.c b/arch/sparc/kernel/prom_irqtrans.c
index 5752bfd73ac0..4cfc27131caa 100644
--- a/arch/sparc/kernel/prom_irqtrans.c
+++ b/arch/sparc/kernel/prom_irqtrans.c
@@ -733,6 +733,7 @@ static unsigned int central_build_irq(struct device_node *dp,
 	} else if (of_node_name_eq(dp, "clock-board")) {
 		res = &central_op->resource[3];
 	} else {
+		put_device(&central_op->dev);
 		return ino;
 	}
 
@@ -747,6 +748,7 @@ static unsigned int central_build_irq(struct device_node *dp,
 	tmp &= ~0x80000000;
 	upa_writel(tmp, imap);
 
+	put_device(&central_op->dev);
 	return build_irq(0, iclr, imap);
 }
 
-- 
2.25.1