PCI: Add bridge DMA alias quirk for ITE bridge

The ITE 8892 is a PCIe-to-PCI bridge but doesn't have a PCIe capability.
Quirk it so we can figure out the DMA alias for devices below the bridge,
so they work correctly with an IOMMU.

[bhelgaas: add changelog]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=73551
Reported-by: Ronald <rwarsow@gmx.de>
Tested-by: Ronald <rwarsow@gmx.de>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index ab620ac..533cd0d 100644 (file)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3407,6 +3407,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
                         quirk_use_pcie_bridge_dma_alias);
 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
+/* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
+DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
 
 static struct pci_dev *pci_func_0_dma_source(struct pci_dev *dev)
 {