This is a note to let you know that I've just added the patch titled
usb: xhci: Fix ASM2142/ASM3142 DMA addressing
to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch.
The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.
If you have any questions about this process, please let me know.
From dbb0897e805f2ab1b8bc358f6c3d878a376b8897 Mon Sep 17 00:00:00 2001
From: Forest Crossman cyrozap@gmail.com Date: Fri, 17 Jul 2020 06:27:34 -0500 Subject: 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 --- drivers/usb/host/xhci-pci.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index ef513c2fb843..9234c82e70e4 100644 --- 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)