I am unable to test with the kernel you provided, because my tuner card
doesn't have driver in mainline kernel tree. So I have to compile it
myself and I need kernel headers for this.

So I compiled kernel 4.16 from debian linux-source-4.16 package and
applied the patch you provided:

>From dd0375ffba55172194999d40b35344e9dc2682df Mon Sep 17 00:00:00 2001
From: "Guilherme G. Piccoli" <gpicc...@canonical.com>
Date: Wed, 11 Apr 2018 11:04:13 +0000
Subject: [PATCH] xhci: Add quirk to ASMedia 0x1242 adapter to avoid BEI

Signed-off-by: Guilherme G. Piccoli <gpicc...@canonical.com>
 drivers/usb/host/xhci-pci.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index d9f831b..0654461 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -213,6 +213,12 @@ static void xhci_pci_quirks(struct device *dev, struct 
xhci_hcd *xhci)
                xhci->quirks |= XHCI_TRUST_TX_LENGTH;

        if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
+                       pdev->device == 0x1242) {
+               xhci->quirks |= XHCI_AVOID_BEI;
+               pr_warn("QUIRK: XHCI_AVOID_BEI");
+       }
+       if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
                pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI)
                xhci->quirks |= XHCI_ASMEDIA_MODIFY_FLOWCONTROL;


Compiled my tuner card driver now and I am testing.

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  xhci_hcd: TRB DMA errors reported with ASMedia ASM1142 USB 3.1

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