dm: pci: Optimize pci_uclass_post_bind()
If there is no pci device listed in the device tree,
don't bother scanning the device tree.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 2d12344..b25298f 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -632,6 +632,13 @@
static int pci_uclass_post_bind(struct udevice *bus)
{
/*
+ * If there is no pci device listed in the device tree,
+ * don't bother scanning the device tree.
+ */
+ if (bus->of_offset == -1)
+ return 0;
+
+ /*
* Scan the device tree for devices. This does not probe the PCI bus,
* as this is not permitted while binding. It just finds devices
* mentioned in the device tree.