diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-09 09:41:32 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-09-20 13:18:14 -0700 |
| commit | 6185dfa6d0aafb67732a1299867c72c56d6f69f3 (patch) | |
| tree | 44cef738ece96c7f6fc16dfece0f18e12ce86430 | |
| parent | adae873370266265202de840d19650a0a8289cd1 (diff) | |
drm: Only decouple the old_fb from the crtc is we call mode_set*
commit 356ad3cd616185631235ffb48b3efbf39f9923b3 upstream.
Otherwise when disabling the output we switch to the new fb (which is
likely NULL) and skip the call to mode_set -- leaking driver private
state on the old_fb.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29857
Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_helper.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 08173fcdda4..1b8745dfd45 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -925,13 +925,13 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) mode_changed = true; if (mode_changed) { - old_fb = set->crtc->fb; - set->crtc->fb = set->fb; set->crtc->enabled = (set->mode != NULL); if (set->mode != NULL) { DRM_DEBUG_KMS("attempting to set mode from" " userspace\n"); drm_mode_debug_printmodeline(set->mode); + old_fb = set->crtc->fb; + set->crtc->fb = set->fb; if (!drm_crtc_helper_set_mode(set->crtc, set->mode, set->x, set->y, old_fb)) { |