diff options
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index ac876e32de4b..7c0c8ab94bcf 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2156,8 +2156,8 @@ static bool pci_bus_wait_crs(struct pci_bus *bus, int devfn, u32 *l, return true; } -bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, - int timeout) +bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, + int timeout) { if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l)) return false; @@ -2172,6 +2172,24 @@ bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, return true; } + +bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, + int timeout) +{ +#ifdef CONFIG_PCI_QUIRKS + struct pci_dev *bridge = bus->self; + + /* + * Certain IDT switches have an issue where they improperly trigger + * ACS Source Validation errors on completions for config reads. + */ + if (bridge && bridge->vendor == PCI_VENDOR_ID_IDT && + bridge->device == 0x80b5) + return pci_idt_bus_quirk(bus, devfn, l, timeout); +#endif + + return pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout); +} EXPORT_SYMBOL(pci_bus_read_dev_vendor_id); /* |