From 95f3aa209acde88f4273403733a0fb29ca28260d Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Sun, 19 Jul 2015 00:20:03 +0800 Subject: [PATCH] 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 --- drivers/pci/pci_auto.c | 9 +++++++++ 1 file changed, 9 insertions(+) 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 */ -- 2.30.2