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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-01-15 12:58:25 +0000 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-01-25 12:41:00 +0200 |
| commit | b78671591a10218ab18bbea120fd05df7a002e88 (patch) | |
| tree | 3dc495544fa4c5080ff973e47c55fd858896024c /drivers/gpu | |
| parent | 3bfdfdcbce2796ce75bf2d85fd8471858d702e5d (diff) | |
| download | linux-b78671591a10218ab18bbea120fd05df7a002e88.tar.gz linux-b78671591a10218ab18bbea120fd05df7a002e88.tar.bz2 linux-b78671591a10218ab18bbea120fd05df7a002e88.zip | |
drm/i915: Avoid drm_atomic_state_put(NULL) in intel_display_resume
intel_display_resume() may be called without an atomic state to restore,
i.e. dev_priv->modeset_reset_restore state is NULL. One such case is
following a lid open/close event and the forced modeset in
intel_lid_notify().
Reported-by: Stefan Seyfried <stefan.seyfried@googlemail.com>
Tested-by: Stefan Seyfried <stefan.seyfried@googlemail.com>
Fixes: 0853695c3ba4 ("drm: Add reference counting to drm_atomic_state")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.10-rc1+
Link: http://patchwork.freedesktop.org/patch/msgid/20170115125825.18597-1-chris@chris-wilson.co.uk
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
(cherry picked from commit 3c5e37f169cb67cbd03c6116fbc93e0805815d29)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 8d702cf1a616..1a01d4189c3f 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -17027,7 +17027,8 @@ void intel_display_resume(struct drm_device *dev) if (ret) DRM_ERROR("Restoring old state failed with %i\n", ret); - drm_atomic_state_put(state); + if (state) + drm_atomic_state_put(state); } void intel_modeset_gem_init(struct drm_device *dev) |