[PATCH kernel v2] powerpc/pci/of: Parse unassigned resources

[Michael Ellerman]

On Wed, 2019-06-26 at 02:37:46 UTC, Alexey Kardashevskiy wrote:
> The pseries platform uses the PCI_PROBE_DEVTREE method of PCI probing
> which reads "assigned-addresses" of every PCI device and initializes
> the device resources. However if the property is missing or zero sized,
> then there is no fallback of any kind and the PCI resources remain
> undiscovered, i.e. pdev->resource[] array remains empty.
> 
> This adds a fallback which parses the "reg" property in pretty much same
> way except it marks resources as "unset" which later make Linux assign
> those resources proper addresses.
> 
> This has an effect when:
> 1. a hypervisor failed to assign any resource for a device;
> 2. /chosen/linux,pci-probe-only=0 is in the DT so the system may try
> assigning a resource.
> Neither is likely to happen under PowerVM.
> 
> Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/dead1c845dbe97e0061dae2017eaf3bd8f8f06ee

cheers