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Message-ID: <a96b110b6b6d9a74506f1cc27cd44b49@oscillator.se>
Date: Mon, 08 Sep 2025 11:00:29 +0200
From: Staffan Melin <staffan.melin@...illator.se>
To: Terry Junge <linuxhid@...micgizmosystems.com>
Cc: Salvatore Bonaccorso <carnil@...ian.org>, Zhang Heng
<zhangheng@...inos.cn>, Jiri Kosina <jkosina@...e.com>, Benjamin Tissoires
<bentiss@...nel.org>, linux-input@...r.kernel.org,
linux-kernel@...r.kernel.org, regressions@...ts.linux.dev,
stable@...r.kernel.org, 1114557@...s.debian.org
Subject: Re: [regression] 1a8953f4f774 ("HID: Add IGNORE quirk for
SMARTLINKTECHNOLOGY") causes issue with ID 4c4a:4155 Jieli Technology USB
Composite Device
Hi Terry,
I am the one with the Jieli touchscreen.
On 2025-09-08 06:10, Terry Junge wrote:
>
> The root of the issue here is that two devices have bootlegged the same
> VID:PID.
>
> 0x4c4a is not a valid VID that has been assigned according to the
> latest list from USBIF (vendor_ids072325_1.pdf) so conflicts like this
> could surface at any time.
>
> [ 10.188336] usb 3-3: device descriptor read/64, error -71
> [ 10.439533] usb 3-3: config 1 interface 0 altsetting 0 has 2
> endpoint descriptors, different from the interface descriptor's value:
> 1
> [ 10.451534] usb 3-3: New USB device found, idVendor=4c4a,
> idProduct=4155, bcdDevice= 1.00
> [ 10.451540] usb 3-3: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [ 10.451543] usb 3-3: Product: USB Composite Device
> [ 10.451545] usb 3-3: Manufacturer: Jieli Technology
> [ 10.451546] usb 3-3: SerialNumber: FFFFFFFFFFFFFFFF
>
> Can anyone supply the Jieli descriptors, including the Report
> Descriptor? It clearly has problems but not bad enough to fail
> enumeration.
>
> The commit 1a8953f4f774 should be reverted and SMARTLINKTECHNOLOGY
> should either bootleg a different PID, get a valid VID, or fix their
> device so a quirk is never required.
>
> Thanks,
> Terry
In /sys/bus/hid/devices/0003:4C4A:4155.0003 i have the report_descriptor
file:
00000000 05 0d 09 04 a1 01 85 aa 09 22 a1 00 09 42 15 00
|........."...B..|
00000010 25 01 75 01 95 01 81 02 75 03 81 03 09 51 75 04
|%.u.....u....Qu.|
00000020 25 0a 81 02 75 08 95 01 81 03 05 01 75 10 55 00
|%...u.......u.U.|
00000030 65 00 09 30 35 00 26 00 10 46 00 10 81 02 09 31
|e..05.&..F.....1|
00000040 26 00 10 46 00 10 81 02 c0 a1 00 05 0d 09 42 15
|&..F..........B.|
00000050 00 25 01 75 01 95 01 81 02 75 03 81 03 09 51 75
|.%.u.....u....Qu|
00000060 04 25 0a 81 02 75 08 95 01 81 03 05 01 75 10 55
|.%...u.......u.U|
00000070 00 65 00 09 30 35 00 26 00 10 46 00 10 81 02 09
|.e..05.&..F.....|
00000080 31 26 00 10 46 00 10 81 02 c0 a1 00 05 0d 09 42
|1&..F..........B|
00000090 15 00 25 01 75 01 95 01 81 02 75 03 81 03 09 51
|..%.u.....u....Q|
000000a0 75 04 25 0a 81 02 75 08 95 01 81 03 05 01 75 10
|u.%...u.......u.|
000000b0 55 00 65 00 09 30 35 00 26 00 10 46 00 10 81 02
|U.e..05.&..F....|
000000c0 09 31 26 00 10 46 00 10 81 02 c0 a1 00 05 0d 09
|.1&..F..........|
000000d0 42 15 00 25 01 75 01 95 01 81 02 75 03 81 03 09
|B..%.u.....u....|
000000e0 51 75 04 25 0a 81 02 75 08 95 01 81 03 05 01 75
|Qu.%...u.......u|
000000f0 10 55 00 65 00 09 30 35 00 26 00 10 46 00 10 81
|.U.e..05.&..F...|
00000100 02 09 31 26 00 10 46 00 10 81 02 c0 a1 00 05 0d
|..1&..F.........|
00000110 09 42 15 00 25 01 75 01 95 01 81 02 75 03 81 03
|.B..%.u.....u...|
00000120 09 51 75 04 25 0a 81 02 75 08 95 01 81 03 05 01
|.Qu.%...u.......|
00000130 75 10 55 00 65 00 09 30 35 00 26 00 10 46 00 10
|u.U.e..05.&..F..|
00000140 81 02 09 31 26 00 10 46 00 10 81 02 c0 05 0d 09
|...1&..F........|
00000150 54 95 01 75 08 15 00 25 0a 81 02 09 55 b1 02 95
|T..u...%....U...|
00000160 3e b1 03 c0 05 0d 09 02 a1 01 85 cc 09 20 a1 00
|>............ ..|
00000170 09 42 09 44 09 3c 09 45 15 00 25 01 75 01 95 04
|.B.D.<.E..%.u...|
00000180 81 02 95 01 09 32 81 02 95 03 81 03 05 01 09 30
|.....2.........0|
00000190 75 10 95 01 a4 55 0d 65 13 35 00 26 00 10 46 00
|u....U.e.5.&..F.|
000001a0 10 81 02 09 31 26 00 10 46 00 10 81 02 b4 05 0d
|....1&..F.......|
000001b0 09 30 26 ff 00 81 02 75 08 09 3d 15 81 25 7f 81
|.0&....u..=..%..|
000001c0 02 09 3e 15 81 25 7f 81 02 c0 c0 05 01 09 02 a1
|..>..%..........|
000001d0 01 85 58 09 01 a1 00 05 09 19 01 29 02 15 00 25
|..X........)...%|
000001e0 01 75 01 95 02 81 02 95 06 81 03 05 01 09 30 15
|.u............0.|
000001f0 00 26 00 10 09 31 26 00 10 75 10 95 02 55 0e 65
|.&...1&..u...U.e|
00000200 11 35 00 46 00 10 81 02 09 38 15 81 25 7f 75 08
|.5.F.....8..%.u.|
00000210 95 01 81 06 c0 c0 |......|
And here is the output from lsusb -c:
Bus 003 Device 003: ID 4c4a:4155 Jieli Technology USB Composite Device
Couldn't open device, some information will be missing
Negotiated speed: Full Speed (12Mbps)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 [unknown]
bDeviceSubClass 0 [unknown]
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x4c4a Jieli Technology
idProduct 0x4155 USB Composite Device
bcdDevice 1.00
iManufacturer 1 Jieli Technology
iProduct 2 USB Composite Device
iSerial 3 FFFFFFFFFFFFFFFF
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0029
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 [unknown]
bInterfaceProtocol 0
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 33 Unknown
bNumDescriptors 1
bDescriptorType 34 (null)
wDescriptorLength 534
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 1
Best regards,
Staffan
>
>> The issue is not specific to the 6.12.y series and confirmed in 6.16.3
>> as well.
>>
>> Staffan Melin did bisect the kernels between 6.12.38 (which was still
>> working) and 6.1.41 (which was not), confirming by bisection that the
>> offending commit is
>>
>> 1a8953f4f774 ("HID: Add IGNORE quirk for SMARTLINKTECHNOLOGY")
>>
>> #regzbot introduced: 1a8953f4f774
>> #regzbot monitor: https://bugs.debian.org/1114557
>>
>> So it looks that the quirk applied is unfortunately affecting
>> negatively as well Staffan Melin case.
>>
>> Can you have a look?
>>
>> Regards,
>> Salvatore
>>
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