From patchwork Wed Jul 15 13:22:55 2020
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From: Hans de Goede <hdegoede@redhat.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>, linux-usb@vger.kernel.org
Subject: [PATCH 0/6] usb: typec: tcpm: Fix AB BA lock inversion between tcpm
 and alt-mode drivers
Date: Wed, 15 Jul 2020 15:22:55 +0200
Message-Id: <20200715132301.99816-1-hdegoede@redhat.com>
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Hi All,

Here is a patch series which fixes an AB BA lock inversion between thr
tcpm code and alt-mode drivers (seen with the display-port alt-mode driver).

The actual fix is in patch 5. I could have just done an unlock before and
a re-lock after all the troublesome typec_altmode_foo(adev, ...) calls, but
I've done some reshuffling in patches 1-4 to make it clearer that when the
unlock happens we are really done with the port-state so it is ok to unlock
then.

Patch 6 is a bonus patch which adds an extra sanity check (WARN_ON) for a
potential issue which I noticed while working on this.

Regards,

Hans