The AMD CS5536's USB controllers are located at device 0F, functions 4
and 5.  They're not found if only function 0 is checked.  So if a device
exists at all, try all its functions.  usb_controller_initialize() will
silently skip all device classes != 0C03.

Signed-off-by: Jens Rottmann <[email protected]>
---

--- payloads/libpayload/drivers/usb/usbinit.c   (rev 5767)
+++ payloads/libpayload/drivers/usb/usbinit.c   (working copy)
@@ -126,7 +126,7 @@
         */
        for (bus = 0; bus < 256; bus++)
                for (dev = 0; dev < 32; dev++)
-                       if (pci_read_config32 (PCI_DEV(bus, dev, 0), 8) >> 16 
== 0x0c03)
+                       if (pci_read_config16(PCI_DEV(bus, dev, 0), 10) != 
0xFFFF)
                                for (func = 7; func >= 0 ; func--)
                                        usb_controller_initialize (bus, dev, 
func);
        usb_poll();
_

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