net/virtio: replace magic number with PCI constant

To use macro instead of magic number in order to enhance code
readability.

Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>

diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index e6da680..55b717c 100644 (file)
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -553,7 +553,7 @@ get_cfg_addr(struct rte_pci_device *dev, struct virtio_pci_cap *cap)
        uint32_t offset = cap->offset;
        uint8_t *base;
 
-       if (bar > 5) {
+       if (bar >= PCI_MAX_RESOURCE) {
                PMD_INIT_LOG(ERR, "invalid bar: %u", bar);
                return NULL;
        }