usb: xhci: Fix ASM2142/ASM3142 DMA addressing

The ASM2142/ASM3142 (same PCI IDs) does not support full 64-bit DMA
addresses, which can cause silent memory corruption or IOMMU errors on
platforms that use the upper bits. Add the XHCI_NO_64BIT_SUPPORT quirk
to fix this issue.

Signed-off-by: Forest Crossman <cyrozap@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200717112734.328432-1-cyrozap@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index ef513c2..9234c82 100644 (file)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -265,6 +265,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
        if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
                        pdev->device == 0x1142)
                xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+       if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
+                       pdev->device == 0x2142)
+               xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
 
        if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
                pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI)