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To:     Michael Tokarev <mjt@tls.msk.ru>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-input@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Ben Caradoc-Davies <ben@transient.nz>
From:   Paul Menzel <pmenzel+linux-input@molgen.mpg.de>
Subject: Commit *driver core: emit uevents when device is bound to a driver*
 causes regression
Message-ID: <8d22cfe6-90b6-eb86-d82e-0e037bfbed4e@molgen.mpg.de>
Date:   Fri, 6 Apr 2018 14:20:40 +0200
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Dear Linux folks,


Commit 1455cf8 (driver core: emit uevents when device is bound to a
driver) [1], introduced in Linux 4.14-rc1, causes a regression in user=20
space.

After disconnecting USB devices, they are still shown as plugged in [2][3=
].

> I seem to be having a similar issue, but with an iPhone X using USB
> to provide internet access. Even after the phone is disconnected, it
> still shows up as "loaded active plugged". The only way to fix this
> is to reboot or use a different USB port.

`git bisect` shows that commit 1455cf8 (driver core: emit uevents when=20
device is bound to a driver) is at fault [4].

As user space should not break with newer Linux kernels, do you know=20
what to do about that or can you think of a fix?


Kind regards,

Paul


[1]=20
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit=
/?id=3D1455cf8dbfd06aa7651dcfccbadb7a093944ca65
[2] https://github.com/systemd/systemd/issues/7587
[3] https://bugs.debian.org/883425
[4] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D883425#68


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