diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-04-16 15:16:42 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-22 15:39:18 -0700 |
| commit | 96f1ffe01afd835e18c6e0a67896376061b33d9d (patch) | |
| tree | 2ef825e1730a365f9118fd8ee39fdbda4c9a4ab5 | |
| parent | c01a9ac74a8b0e704f2d88c277c2a379849b818d (diff) | |
drm/i915: Hold mode_config lock whilst changing mode for lastclose()
commit c291be9dba370ba696a0d482249a212cf5c15f45 upstream.
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>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 12a04b962b95..2dea5aade996 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -283,6 +283,8 @@ 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"); @@ -290,4 +292,6 @@ 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); } |