6.17-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan+linaro@kernel.org
commit e24bbbe0780262a21fc8619fe99078a5b8d64b18 upstream.
Make sure to drop the references to the pwrctrl OF node and device taken by of_pci_find_child_device() and of_find_device_by_node() respectively when scanning the bus.
Fixes: 957f40d039a9 ("PCI/pwrctrl: Move creation of pwrctrl devices to pci_scan_device()") Signed-off-by: Johan Hovold johan+linaro@kernel.org Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Manivannan Sadhasivam mani@kernel.org Cc: stable@vger.kernel.org # v6.15 Link: https://patch.msgid.link/20250721153609.8611-3-johan+linaro@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/pci/probe.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f41128f91ca7..a56dfa1c9b6f 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2516,9 +2516,15 @@ static struct platform_device *pci_pwrctrl_create_device(struct pci_bus *bus, in struct device_node *np;
np = of_pci_find_child_device(dev_of_node(&bus->dev), devfn); - if (!np || of_find_device_by_node(np)) + if (!np) return NULL;
+ pdev = of_find_device_by_node(np); + if (pdev) { + put_device(&pdev->dev); + goto err_put_of_node; + } + /* * First check whether the pwrctrl device really needs to be created or * not. This is decided based on at least one of the power supplies @@ -2526,17 +2532,24 @@ static struct platform_device *pci_pwrctrl_create_device(struct pci_bus *bus, in */ if (!of_pci_supply_present(np)) { pr_debug("PCI/pwrctrl: Skipping OF node: %s\n", np->name); - return NULL; + goto err_put_of_node; }
/* Now create the pwrctrl device */ pdev = of_platform_device_create(np, NULL, &host->dev); if (!pdev) { pr_err("PCI/pwrctrl: Failed to create pwrctrl device for node: %s\n", np->name); - return NULL; + goto err_put_of_node; }
+ of_node_put(np); + return pdev; + +err_put_of_node: + of_node_put(np); + + return NULL; } #else static struct platform_device *pci_pwrctrl_create_device(struct pci_bus *bus, int devfn)