Commit 6fffbc7a authored by Rob Herring's avatar Rob Herring Committed by Bjorn Helgaas
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PCI: Honor firmware's device disabled status 

If a device has a firmware node (DT/ACPI), and the device is marked
disabled, that is currently ignored. Add a check for this condition and
bail out creating the pci_dev.

This assumes the config space for the device can still be accessed because
they already have by this point in order to identify the device.

Link: https://lore.kernel.org/r/20230210164351.2687475-1-robh@kernel.org


Tested-by: default avatarBinbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Cc: Liu Peibao <liupeibao@loongson.cn>
Cc: Huacai Chen <chenhuacai@loongson.cn>
parent c768f8c5

drivers/pci/probe.c

+2 −0
Original line number Diff line number Diff line
@@ -1841,6 +1841,8 @@ int pci_setup_device(struct pci_dev *dev) 


	pci_set_of_node(dev);

	pci_set_acpi_fwnode(dev);

	if (dev->dev.fwnode && !fwnode_device_is_available(dev->dev.fwnode))

		return -ENODEV;



	pci_dev_assign_slot(dev);