[PATCH v1] PCI: xgene: Drop unnecessary OF node reference

[Yuho Choi <dbgh9129@gmail.com>]

xgene_pcie_probe() stores dev->of_node in port->node with
of_node_get(), but the cached node is only used during probe by
xgene_pcie_parse_map_dma_ranges(). The driver never releases the extra
reference, so the node reference is leaked.

There is no need for private OF node ownership here. Use the device's
existing of_node directly in xgene_pcie_parse_map_dma_ranges() and remove
the cached port->node pointer.

Fixes: 5f6b6ccdbe1c ("PCI: xgene: Add APM X-Gene PCIe driver")
Signed-off-by: Yuho Choi <dbgh9129@gmail.com>
---
 drivers/pci/controller/pci-xgene.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
index b95afa35201d..83c9a2930eec 100644
--- a/drivers/pci/controller/pci-xgene.c
+++ b/drivers/pci/controller/pci-xgene.c
@@ -58,7 +58,6 @@
 #define XGENE_PCIE_IP_VER_2		2
 
 struct xgene_pcie {
-	struct device_node	*node;
 	struct device		*dev;
 	struct clk		*clk;
 	void __iomem		*csr_base;
@@ -526,7 +525,7 @@ static void xgene_pcie_setup_ib_reg(struct xgene_pcie *port,
 
 static int xgene_pcie_parse_map_dma_ranges(struct xgene_pcie *port)
 {
-	struct device_node *np = port->node;
+	struct device_node *np = port->dev->of_node;
 	struct of_pci_range range;
 	struct of_pci_range_parser parser;
 	struct device *dev = port->dev;
@@ -612,7 +611,6 @@ static bool xgene_check_pcie_msi_ready(void)
 static int xgene_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *dn = dev->of_node;
 	struct xgene_pcie *port;
 	struct pci_host_bridge *bridge;
 	int ret;
@@ -627,7 +625,6 @@ static int xgene_pcie_probe(struct platform_device *pdev)
 
 	port = pci_host_bridge_priv(bridge);
 
-	port->node = of_node_get(dn);
 	port->dev = dev;
 	port->version = XGENE_PCIE_IP_VER_1;
 
-- 
2.43.0