Re: [PATCH] USB: serial: digi_acceleport: fix hard lockup on disconnect

[Greg Kroah-Hartman]

On Tue, Jun 23, 2026 at 05:11:10PM +0200, Johan Hovold wrote:
> If submitting the OOB write urb fails persistently (e.g if the device is
> being disconnected) the driver would loop indefinitely with interrupts
> disabled.
> 
> Check for urb submission errors when sending OOB commands to avoid
> hanging if, for example, open(), set_termios() or close() races with a
> physical disconnect.
> 
> This is issue was flagged by Sashiko when reviewing an unrelated change
> to the driver.
> 
> Link: https://sashiko.dev/#/patchset/20260610132232.356139-1-johan%40kernel.org?part=1
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>

Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>