diff options
| -rw-r--r-- | src/drivers/usb/pci_ehci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/drivers/usb/pci_ehci.c b/src/drivers/usb/pci_ehci.c index e0f88ec098..c05129163e 100644 --- a/src/drivers/usb/pci_ehci.c +++ b/src/drivers/usb/pci_ehci.c @@ -34,6 +34,10 @@ int ehci_debug_hw_enable(unsigned int *base, unsigned int *dbg_offset) { pci_devfn_t dbg_dev = pci_ehci_dbg_dev(CONFIG_USBDEBUG_HCD_INDEX); + /* We only support controllers on bus 0. */ + if (PCI_DEV2SEGBUS(dbg_dev) != 0) + return -1; + #ifdef __SIMPLE_DEVICE__ pci_devfn_t dev = dbg_dev; #else |