Comment 254 for bug 1749961

Revision history for this message
In , stf_xl (stfxl-linux-kernel-bugs) wrote :

(In reply to biopsin from comment #185)
> [Continuing my first report in
> comment:https://bugzilla.kernel.org/show_bug.cgi?id=202541#c107]

Similarly like for as for alpir case this most likely will require some different fixes, but you can try if disabling Soft Retry works. You can just disable like showed in comment 147

 > $ lspci -k -nn | grep -B2 xhci
> 02:00.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] 400 Series
> Chipset USB 3.1 XHCI Controller [1022:43d5] (rev 01)
> Subsystem: ASMedia Technology Inc. Device [1b21:1142]
> Kernel driver in use: xhci_hcd
>
[snip]
> If someone has some spare time to glance at it or comment on my error ;)
> (diff availible for 30 days) @
> https://p.teknik.io/lIBbA

ASMedia is subsystem_{vendor,device) so most likely quirk flag is not set properly for you. You can print values by patch like this to see:

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 906a0e08821e..0ec9c3637b7a 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -102,6 +102,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)

        id = pci_match_id(pdev->driver->id_table, pdev);

+ printk("vendor: 0x%04x device 0x%04x subvendor 0x%04x subdevice 0x%04x\n",
+ pdev->vendor, pdev->device, pdev->subsystem_vendor, pdev->subsystem_device);
+
        if (id && id->driver_data) {
                driver_data = (struct xhci_driver_data *)id->driver_data;
                xhci->quirks |= driver_data->quirks;

If indeed those are subsystem ID's I think there is bug in existing xhci-pci.c quirks code:

        if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
                pdev->device == PCI_DEVICE_ID_ASMEDIA_1042_XHCI)
                xhci->quirks |= XHCI_BROKEN_STREAMS;
        if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
                pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI)
                xhci->quirks |= XHCI_TRUST_TX_LENGTH;
        if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
            (pdev->device == PCI_DEVICE_ID_ASMEDIA_1142_XHCI ||
             pdev->device == PCI_DEVICE_ID_ASMEDIA_2142_XHCI))
                xhci->quirks |= XHCI_NO_64BIT_SUPPORT

and those check should be replaced by pdev->subsystem_vendor and pdev->subsystem_device.