diff options
| -rw-r--r-- | src/device/pciexp_device.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/device/pciexp_device.c b/src/device/pciexp_device.c index ee24456747..aa3a457541 100644 --- a/src/device/pciexp_device.c +++ b/src/device/pciexp_device.c @@ -147,15 +147,20 @@ static void pciexp_config_max_latency(device_t root, device_t dev) { unsigned int cap; cap = pciexp_find_extended_cap(dev, PCIE_EXT_CAP_LTR_ID); - if (root->ops->ops_pci->set_L1_ss_latency != NULL) - root->ops->ops_pci->set_L1_ss_latency(dev, cap + 4); + if ((cap) && (root->ops->ops_pci != NULL) && + (root->ops->ops_pci->set_L1_ss_latency != NULL)) + root->ops->ops_pci->set_L1_ss_latency(dev, cap + 4); } static void pciexp_enable_ltr(device_t dev) { unsigned int cap; cap = pci_find_capability(dev, PCI_CAP_ID_PCIE); - + if(!cap) { + printk(BIOS_INFO, "Failed to enable LTR for dev = %s\n", + dev_path(dev)); + return; + } pcie_update_cfg(dev, cap + 0x28, ~(1 << 10), 1 << 10); } |