diff options
| -rw-r--r-- | core/pci.c | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -401,8 +401,10 @@ static void pci_slot_set_power_state(struct phb *phb, if (state == PCI_SLOT_POWER_OFF) { /* Bail if there're something connected */ - if (!list_empty(&pd->children)) + if (!list_empty(&pd->children)) { + PCIERR(phb, pd->bdfn, "Attempted to power off slot with attached devices!\n"); return; + } pci_slot_add_flags(slot, PCI_SLOT_FLAG_BOOTUP); rc = slot->ops.get_power_state(slot, &cur_state); @@ -915,7 +917,9 @@ uint8_t pci_scan_bus(struct phb *phb, uint8_t bus, uint8_t max_bus, pci_cfg_write8(phb, pd->bdfn, PCI_CFG_SUBORDINATE_BUS, max_sub); next_bus = max_sub + 1; - pci_slot_set_power_state(phb, pd, PCI_SLOT_POWER_OFF); + /* power off the slot if there's nothing below it */ + if (list_empty(&pd->children)) + pci_slot_set_power_state(phb, pd, PCI_SLOT_POWER_OFF); } return max_sub; |