ixgbe/base: fix bus type overwrite

It needs check if the bus type is the unknown type or not.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Acked-by: Jijiang Liu <jijiang.liu@intel.com>

diff --git a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c
index 38a5a2a5be3c3e4c8ed0f27fc9d9654d01500f54..28eb3ebdf22c5ab385cb1bd20feeb33e4164e4ef 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c
+++ b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c
@@ -953,7 +953,8 @@ void ixgbe_set_pci_config_data_generic(struct ixgbe_hw *hw, u16 link_status)
 {
        struct ixgbe_mac_info *mac = &hw->mac;
 
-       hw->bus.type = ixgbe_bus_type_pci_express;
+       if (hw->bus.type == ixgbe_bus_type_unknown)
+               hw->bus.type = ixgbe_bus_type_pci_express;
 
        switch (link_status & IXGBE_PCI_LINK_WIDTH) {
        case IXGBE_PCI_LINK_WIDTH_1: