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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-04-16 15:16:42 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-04-16 20:37:38 +0200 |
| commit | c291be9dba370ba696a0d482249a212cf5c15f45 (patch) | |
| tree | f0b9fbeb40068c4040f61d2e4d0c7478ec532e9b | |
| parent | f9bef081c3c3f77bec54454872e98d3ec635756f (diff) | |
| download | linux-c291be9dba370ba696a0d482249a212cf5c15f45.tar.gz linux-c291be9dba370ba696a0d482249a212cf5c15f45.tar.bz2 linux-c291be9dba370ba696a0d482249a212cf5c15f45.zip | |
drm/i915: Hold mode_config lock whilst changing mode for lastclose()
Upon lastclose(), we switch back to the fbcon configuration. This
requires taking the mode_config lock in order to serialise the change
with output probing elsewhere.
Reported-by: Oleksij Rempel <bug-track@fisher-privat.net>
References: https://bugs.freedesktop.org/show_bug.cgi?id=48652
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fb.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index 19ecd78b8a2c..6e9ee33fd412 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -279,6 +279,8 @@ void intel_fb_restore_mode(struct drm_device *dev) struct drm_mode_config *config = &dev->mode_config; struct drm_plane *plane; + mutex_lock(&dev->mode_config.mutex); + ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper); if (ret) DRM_DEBUG("failed to restore crtc mode\n"); @@ -286,4 +288,6 @@ void intel_fb_restore_mode(struct drm_device *dev) /* Be sure to shut off any planes that may be active */ list_for_each_entry(plane, &config->plane_list, head) plane->funcs->disable_plane(plane); + + mutex_unlock(&dev->mode_config.mutex); } |