Public bug reported:
Hi
After upgrading the Linux kernel from 5.11.0-27 to 5.13.0-37 a device
that uses a pl2303 usb serial chip no longer works.
This seems very similar to bug 1959110, and according to that it should
be fixed, but somehow it's not.
# uname -a
Linux GAU233333LD04 5.13.0-37-generic #42~20.04.1-Ubuntu SMP Tue Mar 15
15:44:28 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
# journalctl -b -k -g pl2303 -o cat
usbcore: registered new interface driver pl2303
usbserial: USB Serial support registered for pl2303
pl2303 1-12:1.0: pl2303 converter detected
pl2303 1-12:1.0: unknown device type, please report to linux-...@vger.kernel.org
# udevadm info /sys/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0
P: /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0
L: 0
E: DEVPATH=/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0
E: DEVTYPE=usb_interface
E: PRODUCT=67b/2303/300
E: TYPE=0/0/0
E: INTERFACE=255/0/0
E: MODALIAS=usb:v067Bp2303d0300dc00dsc00dp00icFFisc00ip00in00
E: SUBSYSTEM=usb
E: USEC_INITIALIZED=56177916
E: ID_VENDOR_FROM_DATABASE=Prolific Technology, Inc.
E: ID_MODEL_FROM_DATABASE=PL2303 Serial Port
E: ID_PATH=pci-0000:00:14.0-usb-0:12:1.0
E: ID_PATH_TAG=pci-0000_00_14_0-usb-0_12_1_0
E: ID_MM_TTY_MANUAL_SCAN_ONLY=1
** Affects: linux-signed-hwe-5.13 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1967493
Title:
pl2303 serial adapter not recognized
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