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| author | Wen Yang <wen.yang99@zte.com.cn> | 2019-02-27 05:40:42 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2019-04-01 11:42:58 +0200 |
| commit | ff7a5a0a8562434f114035a5a4cbbeec5cb6320c (patch) | |
| tree | 26eaf5b1ce2d02fb8af5f96b269e10b71cccf975 | |
| parent | PCI: iproc: Fix a leaked reference by adding missing of_node_put() (diff) | |
| download | linux-ff7a5a0a8562434f114035a5a4cbbeec5cb6320c.tar.xz linux-ff7a5a0a8562434f114035a5a4cbbeec5cb6320c.zip | |
PCI: mediatek: Fix a leaked reference by adding missing of_node_put()
The call to of_get_next_child() returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.
irq_domain_add_linear() also calls of_node_get() to increase refcount,
so irq_domain will not be affected when it is released.
Detected by coccinelle with the following warnings:
./drivers/pci/controller/pcie-mediatek.c:577:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function.
./drivers/pci/controller/pcie-mediatek.c:583:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function.
./drivers/pci/controller/pcie-mediatek.c:586:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function.
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Honghui Zhang <honghui.zhang@mediatek.com>
Cc: Ryder Lee <ryder.lee@mediatek.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-pci@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
| -rw-r--r-- | drivers/pci/controller/pcie-mediatek.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index 0b6c72804e03..5c485de60466 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -578,6 +578,7 @@ static int mtk_pcie_init_irq_domain(struct mtk_pcie_port *port, port->irq_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX, &intx_domain_ops, port); + of_node_put(pcie_intc_node); if (!port->irq_domain) { dev_err(dev, "failed to get INTx IRQ domain\n"); return -ENODEV; |