A call to of_parse_phandle() is incrementing the refcount, of_node_put must be called when done the work on it. Add missing of_node_put() after the check for msi_np == np and MSI initialization.
Cc: stable@vger.kernel.org # v5.10+ Fixes: 40ca1bf580ef ("PCI: brcmstb: Add MSI support") Signed-off-by: Stanimir Varbanov svarbanov@suse.de --- v1 -> v2: - Use of_node_put instead of cleanups (Florian). - Sent the patch separately from PCIe 2712 series (Florian).
drivers/pci/controller/pcie-brcmstb.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index 744fe1a4cf9c..d171ee61eab3 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -1844,7 +1844,7 @@ static struct pci_ops brcm7425_pcie_ops = {
static int brcm_pcie_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node, *msi_np; + struct device_node *np = pdev->dev.of_node; struct pci_host_bridge *bridge; const struct pcie_cfg_data *data; struct brcm_pcie *pcie; @@ -1944,9 +1944,14 @@ static int brcm_pcie_probe(struct platform_device *pdev) goto fail; }
- msi_np = of_parse_phandle(pcie->np, "msi-parent", 0); - if (pci_msi_enabled() && msi_np == pcie->np) { - ret = brcm_pcie_enable_msi(pcie); + if (pci_msi_enabled()) { + struct device_node *msi_np = of_parse_phandle(pcie->np, "msi-parent", 0); + + if (msi_np == pcie->np) + ret = brcm_pcie_enable_msi(pcie); + + of_node_put(msi_np); + if (ret) { dev_err(pcie->dev, "probe of internal MSI failed"); goto fail;