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From: Johan Hovold <johan@kernel.org>
To: bugzilla-daemon@bugzilla.kernel.org
Cc: linux-usb@vger.kernel.org
Subject: Re: [Bug 212751] New: acm_port_activate - usb_submit_urb(ctrl irq) failed after kernel update
Date: Fri, 23 Apr 2021 10:31:54 +0200	[thread overview]
Message-ID: <YIKF+r22o2jKSoxo@hovoldconsulting.com> (raw)
In-Reply-To: <bug-212751-208809@https.bugzilla.kernel.org/>

On Thu, Apr 22, 2021 at 04:32:51PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=212751
> 
>             Bug ID: 212751
>            Summary: acm_port_activate - usb_submit_urb(ctrl irq) failed
>                     after kernel update
>            Product: Drivers
>            Version: 2.5
>     Kernel Version: 5.10.30
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: USB
>           Assignee: drivers_usb@kernel-bugs.kernel.org
>           Reporter: johann.wilhelm@wilhelm.consulting
>         Regression: No
> 
> Something between 5.10.26 and 5.20.30 broke (at least) the USB CDC
> implementation by ST Microsystems on their STM32 devices.
> 
> On opending of the device following error occurs:
> [ 1333.790160] cdc_acm 1-10:1.0: acm_port_activate - usb_submit_urb(ctrl irq)
> failed
> 
> 
> 5.10.26 works - 5.10.30 does not.

This is likely due to commit 6069e3e927c8 ("USB: cdc-acm: untangle a
circular dependency between callback and softint") which had a bug that
was just fixed by commit a8b3b519618f ("USB: CDC-ACM: fix
poison/unpoison imbalance").

You can try applying the latter yourself but it will otherwise show up
in stable soon.

Johan

  parent reply	other threads:[~2021-04-23  8:31 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-22 16:32 [Bug 212751] New: acm_port_activate - usb_submit_urb(ctrl irq) failed after kernel update bugzilla-daemon
2021-04-23  8:31 ` [Bug 212751] " bugzilla-daemon
2021-04-23  8:31 ` Johan Hovold [this message]
2021-05-27 12:54 ` bugzilla-daemon
2021-06-10 11:09 ` bugzilla-daemon

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