From: Bin Meng Date: Sat, 18 Jul 2015 16:20:03 +0000 (+0800) Subject: dm: pci: Correct primary/secondary/subordinate bus number assignment X-Git-Tag: KARO-TX6-2015-09-18~1046 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cf4685927f73d80fb8db6eaf1a1af1328c56c343;p=karo-tx-uboot.git dm: pci: Correct primary/secondary/subordinate bus number assignment In driver model, each pci bridge device has its own hose structure. hose->first_busno points to the bridge device's device number, so we should not substract hose->first_busno before programming the bridge device's primary/secondary/subordinate bus number registers. Signed-off-by: Bin Meng --- diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c index e034ed1715..ef6dc4facb 100644 --- a/drivers/pci/pci_auto.c +++ b/drivers/pci/pci_auto.c @@ -224,10 +224,15 @@ void pciauto_prescan_setup_bridge(struct pci_controller *hose, prefechable_64 &= PCI_PREF_RANGE_TYPE_MASK; /* Configure bus number registers */ +#ifdef CONFIG_DM_PCI + pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS, PCI_BUS(dev)); + pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS, sub_bus); +#else pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS, PCI_BUS(dev) - hose->first_busno); pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS, sub_bus - hose->first_busno); +#endif pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, 0xff); if (pci_mem) { @@ -295,8 +300,12 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose, struct pci_region *pci_io = hose->pci_io; /* Configure bus number registers */ +#ifdef CONFIG_DM_PCI + pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, sub_bus); +#else pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, sub_bus - hose->first_busno); +#endif if (pci_mem) { /* Round memory allocator to 1MB boundary */