https://bugzilla.kernel.org/show_bug.cgi?id=206897 Bug ID: 206897 Summary: Huion tablet not recognized from kernel 5.3.1 Product: Drivers Version: 2.5 Kernel Version: from 5.3.1 to 5.6-rc6 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: hebm12@xxxxxxxxx Regression: No Hi Kernel Experts! My Huion 1060plus tablet is not recognized from kernel version 5.3.1 dmesg output is: [ 4168.587592] usb 1-1.1: new full-speed USB device number 13 using xhci_hcd [ 4168.990456] usb 1-1.1: New USB device found, idVendor=256c, idProduct=006e, bcdDevice=30.00 [ 4168.990461] usb 1-1.1: New USB device strings: Mfr=5, Product=6, SerialNumber=0 [ 4168.990463] usb 1-1.1: Product: PenTablet [ 4169.003082] usb 1-1.1: can't set config #1, error -32 Previous working versions have this output: [ 62.724538] usb 2-3.1: new full-speed USB device number 3 using xhci_hcd [ 62.851463] usb 2-3.1: New USB device found, idVendor=256c, idProduct=006e, bcdDevice=30.00 [ 62.851470] usb 2-3.1: New USB device strings: Mfr=5, Product=6, SerialNumber=0 [ 62.851475] usb 2-3.1: Product: PenTablet [ 62.909757] hidraw: raw HID events driver (C) Jiri Kosina [ 62.929599] usbcore: registered new interface driver usbhid [ 62.929601] usbhid: USB HID core driver [ 62.939433] input: PenTablet as /devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.1/2-3.1:1.0/0003:256C:006E.0001/input/input15 [ 62.939691] input: PenTablet Mouse as /devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.1/2-3.1:1.0/0003:256C:006E.0001/input/input16 [ 62.939804] hid-generic 0003:256C:006E.0001: input,hidraw0: USB HID v1.11 Mouse [PenTablet ] on usb-0000:00:14.0-3.1/input0 [ 62.943515] input: PenTablet Mouse as /devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.1/2-3.1:1.1/0003:256C:006E.0002/input/input17 [ 62.943646] input: PenTablet as /devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.1/2-3.1:1.1/0003:256C:006E.0002/input/input18 [ 62.943805] hid-generic 0003:256C:006E.0002: input,hiddev0,hidraw1: USB HID v1.11 Mouse [PenTablet ] on usb-0000:00:14.0-3.1/input1 [ 62.944370] input: PenTablet Keyboard as /devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.1/2-3.1:1.2/0003:256C:006E.0003/input/input19 [ 62.951136] usb 2-3.4: new high-speed USB device number 4 using xhci_hcd [ 62.997966] input: PenTablet Consumer Control as /devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.1/2-3.1:1.2/0003:256C:006E.0003/input/input20 [ 62.998070] input: PenTablet System Control as /devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.1/2-3.1:1.2/0003:256C:006E.0003/input/input21 [ 62.998161] hid-generic 0003:256C:006E.0003: input,hidraw2: USB HID v1.0b Keyboard [PenTablet ] on usb-0000:00:14.0-3.1/input2 Looking further down, the commit that creates the problem is (thanks to https://bbs.archlinux.org/viewtopic.php?pid=1878478#p1878478): commit ef513be0a9057cc6baf5d29566aaaefa214ba344 Author: Jim Lin <jilin@xxxxxxxxxx> Date: Mon Jun 3 18:53:44 2019 +0800 usb: xhci: Add Clear_TT_Buffer USB 2.0 specification chapter 11.17.5 says "as part of endpoint halt processing for full-/low-speed endpoints connected via a TT, the host software must use the Clear_TT_Buffer request to the TT to ensure that the buffer is not in the busy state". In our case, a full-speed speaker (ConferenceCam) is behind a high- speed hub (ConferenceCam Connect), sometimes once we get STALL on a request we may continue to get STALL with the folllowing requests, like Set_Interface. Here we invoke usb_hub_clear_tt_buffer() to send Clear_TT_Buffer request to the hub of the device for the following Set_Interface requests to the device to get ACK successfully. Signed-off-by: Jim Lin <jilin@xxxxxxxxxx> Acked-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> drivers/usb/host/xhci-ring.c | 27 ++++++++++++++++++++++++++- drivers/usb/host/xhci.c | 21 +++++++++++++++++++++ drivers/usb/host/xhci.h | 5 +++++ 3 files changed, 52 insertions(+), 1 deletion(-) Thanks for your help! -- You are receiving this mail because: You are watching the assignee of the bug.
