Re: [PATCH 4/8] PCI: consolidate PCI config entry in drivers/pci

On Wed, Oct 17, 2018 at 5:04 PM Christoph Hellwig [off-list ref] wrote:

There is no good reason to duplicate the PCI menu in every architecture.
Instead provide a selectable HAS_PCI symbol that indicates availability

HAS_PCI -> HAVE_PCI

of PCI support and the handle the rest in drivers/pci.

Note that for powerpc we now select HAVE_PCI globally instead of the
convoluted mess of conditional or or non-conditional support per board,
similar to what we do e.g. on x86.  For alpha PCI is selected for the
non-jensen configs as it was the default before, and a lot of code does
not compile without PCI enabled.  On other architectures with limited
PCI support that wasn't as complicated I've left the selection as-is.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Gleixner <redacted>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>

Just in case, could you double-check these?
PCI_ENDPOINT
PCI_ENDPOINT_CONFIGFS
PCI_EPF_TEST


Previously, architecture without "source drivers/pci/Kconfig"
could not enable PCI_ENDPOINT.

Now, any architecture can enable it
regardless of its actual PCI availability
because PCI_ENDPOINT is only guarded by HAS_DMA.


We could add 'depends on HAVE_PCI' or something
to guard it to avoid changing the logic.


config PCI_ENDPOINT
        bool "PCI Endpoint Support"
        depends on HAVE_PCI     # Is this correct ??
        depends on HAS_DMA


or better to have 'depends on PCI' ?


PCI ML is also CC'ed, so comments are appreciated.



-- 
Best Regards
Masahiro Yamada