From: Miaoqian Lin <linmq006@gmail.com>
To: "Ryder Lee" <ryder.lee@mediatek.com>,
"Jianjun Wang" <jianjun.wang@mediatek.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
"Marc Zyngier" <maz@kernel.org>,
linux-pci@vger.kernel.org, linux-mediatek@lists.infradead.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: linmq006@gmail.com
Subject: [PATCH v2] PCI: mediatek-gen3: Fix refcount leak in mtk_pcie_init_irq_domains
Date: Mon, 30 May 2022 10:48:06 +0400 [thread overview]
Message-ID: <20220530064807.34534-1-linmq006@gmail.com> (raw)
of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.
Fixes: 814cceebba9b ("PCI: mediatek-gen3: Add INTx support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
changes in v2:
- move of_node_put(intc_node) right after irq_domain_add_linear to cover
normal path and error paths.
v1 link: https://lore.kernel.org/all/20220526110246.53502-1-linmq006@gmail.com/
---
drivers/pci/controller/pcie-mediatek-gen3.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c
index 3e8d70bfabc6..19a01daad304 100644
--- a/drivers/pci/controller/pcie-mediatek-gen3.c
+++ b/drivers/pci/controller/pcie-mediatek-gen3.c
@@ -598,6 +598,7 @@ static int mtk_pcie_init_irq_domains(struct mtk_gen3_pcie *pcie)
pcie->intx_domain = irq_domain_add_linear(intc_node, PCI_NUM_INTX,
&intx_domain_ops, pcie);
+ of_node_put(intc_node);
if (!pcie->intx_domain) {
dev_err(dev, "failed to create INTx IRQ domain\n");
return -ENODEV;
--
2.25.1
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next reply other threads:[~2022-05-30 6:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-30 6:48 Miaoqian Lin [this message]
2022-05-31 18:13 ` [PATCH v2] PCI: mediatek-gen3: Fix refcount leak in mtk_pcie_init_irq_domains Miles Chen
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