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

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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>
This commit is contained in:
Bin Meng 2015-10-01 00:36:01 -07:00 • committed by Simon Glass
parent af67e7ce23
commit 069155cbb4
1 changed files with 1 additions and 24 deletions
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25
drivers/pci/pci-uclass.c
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@ -85,30 +85,7 @@ static int pci_get_bus_max(void)
int pci_last_busno(void) int pci_last_busno(void)
{ {
struct pci_controller *hose; return pci_get_bus_max();
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;
} }
int pci_get_ff(enum pci_size_t size) int pci_get_ff(enum pci_size_t size)