Rename mcfrtc to rtc

[oweals/u-boot.git] / drivers / pci_auto.c

diff --git a/drivers/pci_auto.c b/drivers/pci_auto.c
index 9e921b2148a41d9c06eaa288e4a378b8c7b64edb..f170c2db89e066420771a5fbb813385905c9baf2 100644 (file)
--- a/drivers/pci_auto.c
+++ b/drivers/pci_auto.c
@@ -34,7 +34,12 @@
 
 void pciauto_region_init(struct pci_region* res)
 {
-       res->bus_lower = res->bus_start;
+       /*
+        * Avoid allocating PCI resources from address 0 -- this is illegal
+        * according to PCI 2.1 and moreover, this is known to cause Linux IDE
+        * drivers to fail. Use a reasonable starting value of 0x1000 instead.
+        */
+       res->bus_lower = res->bus_start ? res->bus_start : 0x1000;
 }
 
 void pciauto_region_align(struct pci_region *res, unsigned long size)
@@ -187,7 +192,7 @@ static void pciauto_prescan_setup_bridge(struct pci_controller *hose,
        } else {
                /* We don't support prefetchable memory for now, so disable */
                pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, 0x1000);
-               pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x1000);
+               pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x0);
        }
 
        if (pci_io) {