On Mon, Sep 24, 2018 at 05:12:51PM +0200, Thomas Petazzoni wrote:
> From: Zachary Zhang <zhangzg@xxxxxxxxxxx>
>
> commit 91a2968e245d6ba616db37001fa1a043078b1a65 usptream.
>
> The PCIE I/O and MEM resource allocation mechanism is that root bus
> goes through the following steps:
>
> 1. Check PCI bridges' range and computes I/O and Mem base/limits.
>
> 2. Sort all subordinate devices I/O and MEM resource requirements and
> allocate the resources and writes/updates subordinate devices'
> requirements to PCI bridges I/O and Mem MEM/limits registers.
>
> Currently, PCI Aardvark driver only handles the second step and lacks
> the first step, so there is an I/O and MEM resource allocation failure
> when using a PCI switch. This commit fixes that by sizing bridges
> before doing the resource allocation.
>
> Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller
> driver")
> Signed-off-by: Zachary Zhang <zhangzg@xxxxxxxxxxx>
> [Thomas: edit commit log.]
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> ---
> drivers/pci/host/pci-aardvark.c | 1 +
> 1 file changed, 1 insertion(+)
Now applied, thanks.
greg k-h
