dm: pci: Fix pci_last_busno() to return the real last bus no

Currently pci_last_busno() only checks the last bridge device
under the first UCLASS_PCI device. This is not the case when
there are multiple bridge devices.

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 2f4368fa1bf762fdfba1c6e80ef668ee7c6c13e3..d15de5ab37c5e5d695a22a7fdf4b6ac0d5f6cef8 100644 (file)
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -85,30 +85,7 @@ static int pci_get_bus_max(void)
 
 int pci_last_busno(void)
 {
-       struct pci_controller *hose;
-       struct udevice *bus;
-       struct uclass *uc;
-       int ret;
-
-       debug("pci_last_busno\n");
-       ret = uclass_get(UCLASS_PCI, &uc);
-       if (ret || list_empty(&uc->dev_head))
-               return -1;
-
-       /* Probe the last bus */
-       bus = list_entry(uc->dev_head.prev, struct udevice, uclass_node);
-       debug("bus = %p, %s\n", bus, bus->name);
-       assert(bus);
-       ret = device_probe(bus);
-       if (ret)
-               return ret;
-
-       /* If that bus has bridges, we may have new buses now. Get the last */
-       bus = list_entry(uc->dev_head.prev, struct udevice, uclass_node);
-       hose = dev_get_uclass_priv(bus);
-       debug("bus = %s, hose = %p\n", bus->name, hose);
-
-       return hose->last_busno;
+       return pci_get_bus_max();
 }
 
 int pci_get_ff(enum pci_size_t size)