1. 24 Mar, 2015 1 commit
    • Imre Deak's avatar
      drm/i915: fix race when clearing RPS IIR bits · 58072ccb
      Imre Deak authored
      When disabling RPS interrupts there is a race where we disable RPS
      inerrupts while the interrupt handler is running and the handler has
      already latched the pending RPS interrupt from the master IIR register.
      Afterwards the disabling path clears the PM IIR bits, making the state
      of pending interrupts inconsistent from the interrupt handler's point of
      view. This triggers the following warning: "The master control interrupt
      lied (PM)!".
      
      To fix this make sure that any running interrupt handler (which may
      have already latched the master IIR) finishes before clearing the IIR
      bits.
      
      Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87347Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
      Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      58072ccb
  2. 23 Mar, 2015 8 commits
  3. 20 Mar, 2015 31 commits