PCI: designware: Relax device number checking to allow SR-IOV

Previously we only allowed device 0 to be directly attached to the root
port.  But SR-IOV devices may use non-zero device numbers for VFs.

Remove the restriction that only device 0 may be attached to a root port.

[bhelgaas: changelog]
Signed-off-by: Po Liu <po.liu@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 12afce19890b..dd20eb2fd865 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -670,13 +670,6 @@ static int dw_pcie_valid_config(struct pcie_port *pp,
         if (bus->number == pp->root_bus_nr && dev > 0)
                 return 0;
 
-        /*
-         * do not read more than one device on the bus directly attached
-         * to RC's (Virtual Bridge's) DS side.
-         */
-        if (bus->primary == pp->root_bus_nr && dev > 0)
-                return 0;
-
         return 1;
 }