On Tue, Sep 30, 2014 at 01:53:06PM -0600, Bjorn Helgaas wrote:

On Tue, Sep 30, 2014 at 11:10 AM, Liviu Dudau [off-list ref] wrote:

quoted

On Tue, Sep 30, 2014 at 10:01:39AM -0600, Bjorn Helgaas wrote:

quoted

On Tue, Sep 30, 2014 at 03:19:05PM +0200, Arnd Bergmann wrote:

quoted

The pci_register_io_range() and pci_pio_to_address() were recently
introduced to generalize the handling of memory mapped PCI I/O space,
but they are only valid when CONFIG_OF is set, leading to a possible
build error:

drivers/pci/host/pcie-rcar.c: In function 'rcar_pcie_setup_window':
drivers/pci/host/pcie-rcar.c:340:3: error: implicit declaration of function 'pci_pio_to_address' [-Werror=implicit-function-declaration]
   res_start = pci_pio_to_address(res->start);
   ^
drivers/pci/host/pcie-rcar.c: In function 'rcar_pcie_probe':
drivers/pci/host/pcie-rcar.c:945:3: error: implicit declaration of function 'of_pci_range_to_resource' [-Werror=implicit-function-declaration]
   err = of_pci_range_to_resource(&range, pdev->dev.of_node,
   ^
cc1: some warnings being treated as errors

This provides inline dummy implementations for the case that
CONFIG_OF is disabled, to allow better build testing.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 279c5dd046 ("of/pci: Add pci_register_io_range() and pci_pio_to_address()")

I'm rebuilding the pci/host-generic branch to pick up the other v13 fixes,
so I folded this fix directly into the "of/pci: Add pci_register_io_range()
and pci_pio_to_address()" patch.  Thanks for finding this; the config
dependencies are a bit of a mess.

Bjorn,

I suggest splitting this patch into 2 parts, move the one that adds pci_pio_to_address() in patch 2
and the other in patch 5.

Yeah, I screwed that up.  I had just applied Arnd's patch completely
to 279c5dd046, which doesn't quite make sense.

I tried again like this:

  - In "of/pci: Add pci_register_io_range() and pci_pio_to_address()",
I added the dummy pci_pio_to_address(), so there's an extern and a
definition in address.c when CONFIG_OF_ADDRESS=y, and an inline dummy
otherwise.

  - I dropped "of/pci: Define of_pci_range_to_resource() only when
CONFIG_PCI=y".

  - In "of/pci: Move of_pci_range_to_resource() to of/address.c", I
added the dummy of_pci_range_to_resource(), so there's an extern an a
definition in address.c when CONFIG_OF_ADDRESS=y and CONFIG_PCI=y, and
an inline dummy otherwise.

I'm not really set up to build test this, and my head is swimming a
bit, so I hope this is it.  I pushed the pci/host-generic branch
again, so you can look at it yourself.

Hi Bjorn,

It looks good to me. Functionality-wise I can only test it tomorrow UK time,
but from the diffs I've done I thinks we're good.

Will wait for more reports from the build bot.

Take care,
Liviu

Bjorn