[Intel-gfx] [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock

We now have two locks for sideband access. The general one covering sideband access across all generation, sb_lock, and a specific one covering sideband access via the punit on vlv/chv. After lifting the sb_lock around the punit into the callers, the pcu_lock is now redudant and can be separated fr

[Intel-gfx] [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock

We now have two locks for sideband access. The general one covering sideband access across all generation, sb_lock, and a specific one covering sideband access via the punit on vlv/chv. After lifting the sb_lock around the punit into the callers, the pcu_lock is now redudant and can be separated fr