linux-kernel - [PATCH v2 0/2] serdev: fix broken lifetime assumptions

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Message-Id: <20170518153301.28885-1-johan@kernel.org>
Date:   Thu, 18 May 2017 17:32:59 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Rob Herring <robh@...nel.org>, Jiri Slaby <jslaby@...e.com>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...nel.org>
Subject: [PATCH v2 0/2] serdev: fix broken lifetime assumptions

This series fixes a number of issues with the new serdev code, which was
based on incorrect tty-port lifetime assumptions.

The first patch in v1 of this series disables serdev support by reverting the
patch which hooked into the tty layer in a broken way that leads to crashes and
leaks when deregistering devices. That one has now been applied to tty-linus
with a stable tag (for v4.11).

The remaining two patches again re-enables serdev (first enabled in 4.11, but
soon reverted in stable) for a subset of tty drivers by adding adding a new
interface for registering serdev devices and using that in serial core only.

More details can be found in the individual commit messages.

Johan

Changes in v2
 - rebase on tty-linus
 - drop first two patches that have already been applied
 - remove a stray newline in patch 1/2
 - add Rob's reviewed-by tag

Johan Hovold (2):
  tty/serdev: add serdev registration interface
  serial: enable serdev support

 drivers/tty/serdev/serdev-ttyport.c |  6 ++-
 drivers/tty/serial/serial_core.c    |  4 +-
 drivers/tty/tty_port.c              | 75 +++++++++++++++++++++++++++++++++++++
 include/linux/serdev.h              |  7 +++-
 include/linux/tty.h                 |  9 +++++
 5 files changed, 95 insertions(+), 6 deletions(-)

-- 
2.13.0