virtio: Avoid repeating a long expression

Use a local variable to hold this name, to reduce the amount of code that
needs to be read.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/virtio/virtio-uclass.c b/drivers/virtio/virtio-uclass.c
index da4f2f2..6d9b029 100644 (file)
--- a/drivers/virtio/virtio-uclass.c
+++ b/drivers/virtio/virtio-uclass.c
@@ -214,6 +214,7 @@ static int virtio_uclass_post_probe(struct udevice *udev)
        struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(udev);
        char dev_name[30], *str;
        struct udevice *vdev;
+       const char *name;
        int ret;
 
        if (uc_priv->device >= VIRTIO_ID_MAX_NUM) {
@@ -222,20 +223,19 @@ static int virtio_uclass_post_probe(struct udevice *udev)
                return 0;
        }
 
-       if (!virtio_drv_name[uc_priv->device]) {
+       name = virtio_drv_name[uc_priv->device];
+       if (!name) {
                debug("(%s): underlying virtio device driver unavailable\n",
                      udev->name);
                return 0;
        }
 
-       snprintf(dev_name, sizeof(dev_name), "%s#%d",
-                virtio_drv_name[uc_priv->device], dev_seq(udev));
+       snprintf(dev_name, sizeof(dev_name), "%s#%d", name, dev_seq(udev));
        str = strdup(dev_name);
        if (!str)
                return -ENOMEM;
 
-       ret = device_bind_driver(udev, virtio_drv_name[uc_priv->device],
-                                str, &vdev);
+       ret = device_bind_driver(udev, name, str, &vdev);
        if (ret == -ENOENT) {
                debug("(%s): no driver configured\n", udev->name);
                return 0;