linux-kernel - [PATCH 0/5] drm/nouveau: Fix a lot of nasty RPM bugs and deadlocks

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Date:   Mon, 16 Jul 2018 19:59:24 -0400
From:   Lyude Paul <lyude@...hat.com>
To:     nouveau@...ts.freedesktop.org
Cc:     Karol Herbst <karolherbst@...il.com>, stable@...r.kernel.org,
        "David Airlie" <airlied@...ux.ie>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, "Ben Skeggs" <bskeggs@...hat.com>,
        "Maarten Lankhorst" <maarten.lankhorst@...ux.intel.com>,
        "Daniel Vetter" <daniel.vetter@...ll.ch>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>, "Lyude Paul" <lyude@...hat.com>
Subject: [PATCH 0/5] drm/nouveau: Fix a lot of nasty RPM bugs and deadlocks

This fixes quite a number of runtime PM bugs I found that have been
causing some pretty nasty issues such as:
 - Deadlocking on boot
 - Connector probing potentially not working while the GPU is in runtime
   suspend
 - i2c char dev not working while the GPU is in runtime suspend
 - aux char dev not working while the GPU is in runtime suspend

There's definitely more parts of nouveau that need to be fixed to use
runtime power management correctly, such as the hwmon portions, but this
series just handles the more important fixes that should get into stable
for the time being.

Cc: Karol Herbst <karolherbst@...il.com>
Cc: stable@...r.kernel.org

Lyude Paul (5):
  drm/nouveau: Prevent RPM callback recursion in suspend/resume paths
  drm/nouveau: Grab RPM ref while probing outputs
  drm/nouveau: Add missing RPM get/put() when probing connectors
  drm/nouveau: Grab RPM ref when i2c bus is in use
  drm/nouveau: Grab RPM ref when aux bus is in use

 drivers/gpu/drm/nouveau/dispnv50/disp.c       | 12 +++++++++--
 drivers/gpu/drm/nouveau/nouveau_connector.c   | 21 +++++++++++++++++--
 drivers/gpu/drm/nouveau/nouveau_connector.h   |  3 +++
 drivers/gpu/drm/nouveau/nouveau_drm.c         | 10 ++++++++-
 drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c | 12 ++++++++++-
 drivers/gpu/drm/nouveau/nvkm/subdev/i2c/bus.c | 12 ++++++++++-
 6 files changed, 63 insertions(+), 7 deletions(-)

-- 
2.17.1