On Thu, Jun 18, 2015 at 1:00 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> On Thu, Jun 18, 2015 at 11:45:39AM -0700, Duc Dang wrote:
>> Even if a Root Port's link is down, we should still be able to access the
>> Port's configuration space.
>>
>> Suggested-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
>> Signed-off-by: Duc Dang <dhdang@xxxxxxx>
>> Signed-off-by: Tanmay Inamdar <tinamdar@xxxxxxx>
>> ---
>> drivers/pci/host/pci-xgene.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
>> index 7e3cf28..2e66c87 100644
>> --- a/drivers/pci/host/pci-xgene.c
>> +++ b/drivers/pci/host/pci-xgene.c
>> @@ -139,7 +139,7 @@ static void __iomem *xgene_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
>> {
>> struct xgene_pcie_port *port = bus->sysdata;
>>
>> - if ((pci_is_root_bus(bus) && devfn != 0) || !port->link_up ||
>> + if ((pci_is_root_bus(bus) && devfn != 0) ||
>> xgene_pcie_hide_rc_bars(bus, offset))
>> return NULL;
>>
>
> Applied with changelog as follows to pci/host-xgene for v4.2, thanks!
It was my fault that I missed a compilation warning due to struct
xgene_pcie_port *port
becomes unused variable. I will send another patch that fix this
compilation warning right after this email.
>
> commit 979595bcb8da04381ed85d3b0eb1f471cc5863e4
> Author: Duc Dang <dhdang@xxxxxxx>
> Date: Thu Jun 18 11:45:39 2015 -0700
>
> PCI: xgene: Allow config access to Root Port even when link is down
>
> Previously, when a Root Port's link was down, we didn't allow config access
> to the Root Port, which meant that if the Root Port led to an empty slot,
> "lspci" didn't even show the Root Port.
>
> Allow config access to Root Port even when link is down.
>
> [bhelgaas: changelog]
> Suggested-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> Signed-off-by: Duc Dang <dhdang@xxxxxxx>
> Signed-off-by: Tanmay Inamdar <tinamdar@xxxxxxx>
> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
>
> diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
> index 70af714..1fc8910 100644
> --- a/drivers/pci/host/pci-xgene.c
> +++ b/drivers/pci/host/pci-xgene.c
> @@ -139,7 +139,7 @@ static void __iomem *xgene_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
> {
> struct xgene_pcie_port *port = bus->sysdata;
>
> - if ((pci_is_root_bus(bus) && devfn != 0) || !port->link_up ||
> + if ((pci_is_root_bus(bus) && devfn != 0) ||
> xgene_pcie_hide_rc_bars(bus, offset))
> return NULL;
>
-
Thanks,
Duc Dang.
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