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path: root/drivers/pci/probe.c
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Diffstat (limited to 'drivers/pci/probe.c')
-rw-r--r--drivers/pci/probe.c22
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);
/*