diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-03-30 23:48:31 +0300 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2017-03-31 03:28:24 +0300 |
| commit | 9739e7464691456dd7c297b92ef0783fe13f6ba5 (patch) | |
| tree | 665f02f821fcca7c616f9b217c767fbcc0fbfb1f /drivers/gpu | |
| parent | bcd2ba02a41d46c426fd16ad530b96527a5f181a (diff) | |
| download | linux-9739e7464691456dd7c297b92ef0783fe13f6ba5.tar.xz | |
drm: Fix locking gotcha in page_flip ioctl
We want to lock the primary plane, not the cursor (which might be
optional). Real bad case of copy-paste fail, unfortunately our CI
didn't catch that because i915 does have a cursor plane.
Reported-by: Eric Anholt <eric@anholt.net>
Fixes: 29dc0d1de182 ("drm: Roll out acquire context for the page_flip ioctl")
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170330204831.8225-1-daniel.vetter@ffwll.ch
Tested-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 5eca3184a747..bc71aa2b7872 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -872,7 +872,7 @@ retry: ret = drm_modeset_lock(&crtc->mutex, &ctx); if (ret) goto out; - ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx); + ret = drm_modeset_lock(&crtc->primary->mutex, &ctx); if (ret) goto out; |