bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-04-24 14:07:52 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

PCI: Honor firmware's device disabled status

Browse source 
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: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Liu Peibao <liupeibao@loongson.cn>
Cc: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Rob Herring 2023-02-10 10:43:51 -06:00 • committed by Bjorn Helgaas
parent c768f8c5f4
commit 6fffbc7ae1
1 changed files with 2 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/pci/probe.c
View file

@ -1841,6 +1841,8 @@ int pci_setup_device(struct pci_dev *dev)
pci_set_of_node(dev); pci_set_of_node(dev);
pci_set_acpi_fwnode(dev); pci_set_acpi_fwnode(dev);
if (dev->dev.fwnode && !fwnode_device_is_available(dev->dev.fwnode))
return -ENODEV;
pci_dev_assign_slot(dev); pci_dev_assign_slot(dev);