dtc only uses dev_fn as identifier for a PCI device. That gets us a name
collision if we have the same dev_fn combination on multiple buses.
Either we add a random unique ID to the struct name or we integrate the
path to the parent device as well.
I decided to go for integration of parent device path.
With the following device tree
/{
cpus {};
domain@0 {
bus@0 {
pci@0,0 {
};
pci@1,1 {
};
pci@f,0 {
bus@1 {
pci@0,0 {
};
};
};
};
};
};
we get the old names:
dev_root
dev_cpus
dev_domain_0
dev_bus_0
dev_pci_0_0
dev_pci_1_1
dev_pci_f_0
dev_bus_1
dev_pci_0_0 COLLISION!!!
and the new names:
dev_root
dev_cpus
dev_domain_0
dev_domain_0_bus_0
dev_domain_0_bus_0_pci_0_0
dev_domain_0_bus_0_pci_1_1
dev_domain_0_bus_0_pci_f_0
dev_domain_0_bus_0_pci_f_0_bus_1
dev_domain_0_bus_0_pci_f_0_bus_1_pci_0_0
Ron would like shorter names because they only have to be
machine-readable. That's left for another patch.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@860 f3766cd6-281f-0410-b1cd-43a5c92072e9
c2084e9de3