From: bugzilla-daemon@bugzilla.kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 212725] New: USB CDC ACM device stop working
Date: Mon, 19 Apr 2021 21:18:02 +0000 [thread overview]
Message-ID: <bug-212725-208809@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=212725
Bug ID: 212725
Summary: USB CDC ACM device stop working
Product: Drivers
Version: 2.5
Kernel Version: 5.11.15
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: USB
Assignee: drivers_usb@kernel-bugs.kernel.org
Reporter: stefan@agner.ch
Regression: No
When trying to use USB CDC ACM devices (open using screen) opening fails and
the kernel dmesg shows the following error:
kernel: cdc_acm 1-3.3.3:1.0: acm_port_activate - usb_submit_urb(ctrl irq)
failed
This happens with STM32 microcontroller based device as well as a Segger JTAG
adapter, so it seems not device related. The issue must have been introduced
recently (within the last month) as those devices used to work previously. I
can reproduce the issue also with latest LTS kernel release 5.10.31.
Builds:
- 5.10.31-1-lts
- 5.11.15-arch1-2
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next reply other threads:[~2021-04-19 21:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-19 21:18 bugzilla-daemon [this message]
2021-04-19 21:26 ` [Bug 212725] USB CDC ACM device stop working bugzilla-daemon
2021-04-19 21:34 ` bugzilla-daemon
2021-04-20 9:58 ` bugzilla-daemon
2021-04-20 13:35 ` bugzilla-daemon
2021-04-22 11:36 ` bugzilla-daemon
2021-04-28 21:39 ` bugzilla-daemon
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