On Thursday 30 October 2014 11:44:48 Lorenzo Pieralisi wrote:

Most if not all ARM PCI host controller device drivers either ignore the
domain field in the pci_sys_data structure or just increment it every
time a host controller is probed, using it as a domain counter.

Therefore, instead of relying on pci_sys_data to stash the domain number
in a standard location, ARM pcibios code can be moved to the newly
introduced generic PCI domains code, implemented in commits:

commit 41e5c0f81d3e676d671d96a0a1fafb27abfbd9
("of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()")

commit 670ba0c8883b576d0aec28bd7a838358a4be1
("PCI: Add generic domain handling")

In order to assign a domain number dynamically, the ARM pcibios defines
the function, called by core PCI code:

void pci_bus_assign_domain_nr(...)

that relies on a DT property to define the domain number or falls back to
a counter; its usage replaces the current domain assignment code in PCI
host controllers present in the kernel.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Phil Edworthy <redacted>
Cc: Jason Gunthorpe <redacted>
Cc: Jingoo Han <redacted>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Russell King <redacted>
Cc: Mohit Kumar <redacted>
Signed-off-by: Lorenzo Pieralisi <redacted>

Acked-by: Arnd Bergmann <arnd@arndb.de>

Very nice!