On Sat, Sep 12, 2015 at 12:21:58AM +0100, David Daney wrote:
> From: David Daney <david.daney@xxxxxxxxxx>
>
> If the bus is being configured with a bus-range that does not start at
> zero, pass that starting bus number to pci_scan_root_bus(). Passing
> the incorrect value of zero causes attempted config accesses outside
> of the supported range, which cascades to an OOPs spew and eventual
> kernel panic.
>
> Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
> ---
> drivers/pci/host/pci-host-generic.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
> index fce5bf7..8219c0b 100644
> --- a/drivers/pci/host/pci-host-generic.c
> +++ b/drivers/pci/host/pci-host-generic.c
> @@ -265,7 +265,7 @@ static int gen_pci_probe(struct platform_device *pdev)
> if (!pci_has_flag(PCI_PROBE_ONLY))
> pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS);
>
> - bus = pci_scan_root_bus(dev, 0,
> + bus = pci_scan_root_bus(dev, pci->cfg.bus_range->start,
> &pci->cfg.ops.ops, pci, &pci->resources);
> if (!bus) {
> dev_err(dev, "Scanning rootbus failed");
Acked-by: Will Deacon <will.deacon@xxxxxxx>
Will
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