diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-09 12:41:32 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-09-13 14:25:46 +0400 |
| commit | 356ad3cd616185631235ffb48b3efbf39f9923b3 (patch) | |
| tree | 178d1949631bfa36944aa2861916155c3140240b /drivers/gpu | |
| parent | e6db0da02ea753968d15ae3e835059c207647e78 (diff) | |
| download | linux-356ad3cd616185631235ffb48b3efbf39f9923b3.tar.xz | |
drm: Only decouple the old_fb from the crtc is we call mode_set*
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>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -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 4238a19c36db..de152a58967d 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -637,13 +637,13 @@ 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)) { |