diff options
Diffstat (limited to 'arch/ppc64/kernel/rtas_pci.c')
| -rw-r--r-- | arch/ppc64/kernel/rtas_pci.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/arch/ppc64/kernel/rtas_pci.c b/arch/ppc64/kernel/rtas_pci.c index 1dccadaddd1d..4a9719b48abe 100644 --- a/arch/ppc64/kernel/rtas_pci.c +++ b/arch/ppc64/kernel/rtas_pci.c @@ -48,7 +48,7 @@ static int write_pci_config; static int ibm_read_pci_config; static int ibm_write_pci_config; -static int config_access_valid(struct device_node *dn, int where) +static int config_access_valid(struct pci_dn *dn, int where) { if (where < 256) return 1; @@ -78,15 +78,17 @@ static int rtas_read_config(struct device_node *dn, int where, int size, u32 *va int returnval = -1; unsigned long buid, addr; int ret; + struct pci_dn *pdn; - if (!dn) + if (!dn || !dn->data) return PCIBIOS_DEVICE_NOT_FOUND; - if (!config_access_valid(dn, where)) + pdn = dn->data; + if (!config_access_valid(pdn, where)) return PCIBIOS_BAD_REGISTER_NUMBER; - addr = ((where & 0xf00) << 20) | (dn->busno << 16) | - (dn->devfn << 8) | (where & 0xff); - buid = dn->phb->buid; + addr = ((where & 0xf00) << 20) | (pdn->busno << 16) | + (pdn->devfn << 8) | (where & 0xff); + buid = pdn->phb->buid; if (buid) { ret = rtas_call(ibm_read_pci_config, 4, 2, &returnval, addr, buid >> 32, buid & 0xffffffff, size); @@ -98,8 +100,8 @@ static int rtas_read_config(struct device_node *dn, int where, int size, u32 *va if (ret) return PCIBIOS_DEVICE_NOT_FOUND; - if (returnval == EEH_IO_ERROR_VALUE(size) - && eeh_dn_check_failure (dn, NULL)) + if (returnval == EEH_IO_ERROR_VALUE(size) && + eeh_dn_check_failure (dn, NULL)) return PCIBIOS_DEVICE_NOT_FOUND; return PCIBIOS_SUCCESSFUL; @@ -118,24 +120,28 @@ static int rtas_pci_read_config(struct pci_bus *bus, /* Search only direct children of the bus */ for (dn = busdn->child; dn; dn = dn->sibling) - if (dn->devfn == devfn && of_device_available(dn)) + if (dn->data && PCI_DN(dn)->devfn == devfn + && of_device_available(dn)) return rtas_read_config(dn, where, size, val); + return PCIBIOS_DEVICE_NOT_FOUND; } -static int rtas_write_config(struct device_node *dn, int where, int size, u32 val) +int rtas_write_config(struct device_node *dn, int where, int size, u32 val) { unsigned long buid, addr; int ret; + struct pci_dn *pdn; - if (!dn) + if (!dn || !dn->data) return PCIBIOS_DEVICE_NOT_FOUND; - if (!config_access_valid(dn, where)) + pdn = dn->data; + if (!config_access_valid(pdn, where)) return PCIBIOS_BAD_REGISTER_NUMBER; - addr = ((where & 0xf00) << 20) | (dn->busno << 16) | - (dn->devfn << 8) | (where & 0xff); - buid = dn->phb->buid; + addr = ((where & 0xf00) << 20) | (pdn->busno << 16) | + (pdn->devfn << 8) | (where & 0xff); + buid = pdn->phb->buid; if (buid) { ret = rtas_call(ibm_write_pci_config, 5, 1, NULL, addr, buid >> 32, buid & 0xffffffff, size, (ulong) val); } else { @@ -161,7 +167,8 @@ static int rtas_pci_write_config(struct pci_bus *bus, /* Search only direct children of the bus */ for (dn = busdn->child; dn; dn = dn->sibling) - if (dn->devfn == devfn && of_device_available(dn)) + if (dn->data && PCI_DN(dn)->devfn == devfn + && of_device_available(dn)) return rtas_write_config(dn, where, size, val); return PCIBIOS_DEVICE_NOT_FOUND; } |