diff options
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 19 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 1 |
2 files changed, 19 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index edf39e099945..c4461ad8a689 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1244,9 +1244,14 @@ static void __devinit pnv_pci_ioda_setup_seg(void) static void __devinit pnv_pci_ioda_setup_DMA(void) { struct pci_controller *hose, *tmp; + struct pnv_phb *phb; list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { pnv_ioda_setup_dma(hose->private_data); + + /* Mark the PHB initialization done */ + phb = hose->private_data; + phb->initialized = 1; } } @@ -1300,10 +1305,22 @@ static resource_size_t pnv_pci_window_alignment(struct pci_bus *bus, */ static int __devinit pnv_pci_enable_device_hook(struct pci_dev *dev) { - struct pci_dn *pdn = pnv_ioda_get_pdn(dev); + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + struct pci_dn *pdn; + /* The function is probably called while the PEs have + * not be created yet. For example, resource reassignment + * during PCI probe period. We just skip the check if + * PEs isn't ready. + */ + if (!phb->initialized) + return 0; + + pdn = pnv_ioda_get_pdn(dev); if (!pdn || pdn->pe_number == IODA_INVALID_PE) return -EINVAL; + return 0; } diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index b70720bd9430..7cfb7c883deb 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -69,6 +69,7 @@ struct pnv_phb { enum pnv_phb_model model; u64 opal_id; void __iomem *regs; + int initialized; spinlock_t lock; #ifdef CONFIG_PCI_MSI |