From: Wen Yang <wen.yang99@xxxxxxxxxx>
[ Upstream commit fa3a419d2f674b431d38748cb58fb7da17ee8949 ]
The call to of_parse_phandle returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.
Detected by coccinelle with the following warnings:
./drivers/net/ethernet/xilinx/xilinx_axienet_main.c:1624:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1569, but without a corresponding object release within this function.
Signed-off-by: Wen Yang <wen.yang99@xxxxxxxxxx>
Cc: Anirudha Sarangi <anirudh@xxxxxxxxxx>
Cc: John Linn <John.Linn@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Michal Simek <michal.simek@xxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin (Microsoft) <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index f24f48f33802..7cfd7ff38e86 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1574,12 +1574,14 @@ static int axienet_probe(struct platform_device *pdev)
ret = of_address_to_resource(np, 0, &dmares);
if (ret) {
dev_err(&pdev->dev, "unable to get DMA resource\n");
+ of_node_put(np);
goto free_netdev;
}
lp->dma_regs = devm_ioremap_resource(&pdev->dev, &dmares);
if (IS_ERR(lp->dma_regs)) {
dev_err(&pdev->dev, "could not map DMA regs\n");
ret = PTR_ERR(lp->dma_regs);
+ of_node_put(np);
goto free_netdev;
}
lp->rx_irq = irq_of_parse_and_map(np, 1);
--
2.19.1
