• Lorenzo Pieralisi's avatar
    PCI: controller: Move PCI_DOMAINS selection to arch Kconfig · 925d3166
    Lorenzo Pieralisi authored
    Commit 51bc085d ("PCI: Improve host drivers compile test coverage")
    added configuration options to allow PCI host controller drivers to be
    compile tested on all architectures.
    
    Some host controller drivers (eg PCIE_ALTERA) config entries select the
    PCI_DOMAINS config option to enable PCI domains management in the kernel.
    Now that host controller drivers can be compiled on all architectures, this
    triggers build regressions on arches that do not implement the PCI_DOMAINS
    required API (ie pci_domain_nr()):
    
      drivers/ata/pata_ali.c: In function 'ali_init_chipset':
      drivers/ata/pata_ali.c:469:38: error: implicit declaration of function 'pci_domain_nr'; did you mean 'pci_iomap_wc'?
    
    Furthemore, some software configurations (ie Jailhouse) require a
    PCI_DOMAINS enabled kernel to configure multiple host controllers without
    having an explicit dependency on the ARM platform on which they run.
    
    Make PCI_DOMAINS a visible configuration option on ARM so that software
    configurations that need it can manually select it and move the PCI_DOMAINS
    selection from PCI controllers configuration file to ARM sub-arch config
    entries that currently require it, fixing the issue.
    
    Fixes: 51bc085d ("PCI: Improve host drivers compile test coverage")
    Link: https://lkml.kernel.org/r/20180612170229.GA10141@roeck-us.netReported-by: default avatarGuenter Roeck <linux@roeck-us.net>
    Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
    Signed-off-by: default avatarBjorn Helgaas <helgaas@kernel.org>
    Acked-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
    Acked-by: default avatarLey Foon Tan <ley.foon.tan@intel.com>
    Acked-by: default avatarRob Herring <robh@kernel.org>
    Cc: Scott Branden <scott.branden@broadcom.com>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: Russell King <linux@armlinux.org.uk>
    Cc: Guenter Roeck <linux@roeck-us.net>
    925d3166
Kconfig 6.14 KB