1. 01 Oct, 2014 14 commits
  2. 30 Sep, 2014 6 commits
  3. 25 Sep, 2014 1 commit
    • Daniel Vetter's avatar
      drm: Drop grab fpriv->fbs_lock in drm_fb_release · 1b116297
      Daniel Vetter authored
      Paulo Zanoni reported a lockdep splat with a locking inversion between
      fpriv->fbs_lock and the modeset locks. This issue was introduced in
      
      commit f2b50c11
      Author: Daniel Vetter <daniel.vetter@ffwll.ch>
      Date:   Fri Sep 12 17:07:32 2014 +0200
      
          drm: Fixup locking for universal cursor planes
      
      This here is actually one of the rare cases where lockdep hits a false
      positive: The deadlock only happens in drm_fb_release, which cleans up
      the file private structure when all the references are gone. So the
      locking is the very last one and no one else can deadlock. It also
      doesn't protect anything at all, since all ioctls are guaranteed to
      have returned at this point - otherwise they'd still hold a reference
      on the file.
      
      So let's just drop it and replace it with a big comment.
      
      Cc: David Herrmann <dh.herrmann@gmail.com>
      Cc: Matt Roper <matthew.d.roper@intel.com>
      Cc: Paulo Zanoni <przanoni@gmail.com>
      Reported-and-Tested-by: default avatarPaulo Zanoni <przanoni@gmail.com>
      Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
      Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
      1b116297
  4. 24 Sep, 2014 19 commits