This is a note to let you know that I've just added the patch titled xhci: Fresco FL1100 controller should not have BROKEN_MSI quirk set. to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: xhci-fresco-fl1100-controller-should-not-have-broken_msi-quirk-set.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From e4844092581ceec22489b66c42edc88bc6079783 Mon Sep 17 00:00:00 2001 From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> Date: Tue, 21 Dec 2021 13:28:25 +0200 Subject: xhci: Fresco FL1100 controller should not have BROKEN_MSI quirk set. From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> commit e4844092581ceec22489b66c42edc88bc6079783 upstream. The Fresco Logic FL1100 controller needs the TRUST_TX_LENGTH quirk like other Fresco controllers, but should not have the BROKEN_MSI quirks set. BROKEN_MSI quirk causes issues in detecting usb drives connected to docks with this FL1100 controller. The BROKEN_MSI flag was apparently accidentally set together with the TRUST_TX_LENGTH quirk Original patch went to stable so this should go there as well. Fixes: ea0f69d82119 ("xhci: Enable trust tx length quirk for Fresco FL11 USB controller") Cc: stable@xxxxxxxxxxxxxxx cc: Nikolay Martynov <mar.kolya@xxxxxxxxx> Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20211221112825.54690-2-mathias.nyman@xxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/host/xhci-pci.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -92,7 +92,6 @@ static void xhci_pci_quirks(struct devic /* Look for vendor-specific quirks */ if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK || - pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1100 || pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1400)) { if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK && pdev->revision == 0x0) { @@ -127,6 +126,10 @@ static void xhci_pci_quirks(struct devic pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1009) xhci->quirks |= XHCI_BROKEN_STREAMS; + if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && + pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1100) + xhci->quirks |= XHCI_TRUST_TX_LENGTH; + if (pdev->vendor == PCI_VENDOR_ID_NEC) xhci->quirks |= XHCI_NEC_HOST; Patches currently in stable-queue which might be from mathias.nyman@xxxxxxxxxxxxxxx are queue-4.9/xhci-fresco-fl1100-controller-should-not-have-broken_msi-quirk-set.patch