tree 6b1671f86a52d69c1f8953a730fe1f8989a4f0f6
parent a580516d9fcb09b86337895e483c93ad6c1ce4b5
author Ville Syrjälä <ville.syrjala@linux.intel.com> 1432662151 +0300
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1432804432 +0200

drm/i915: Adjust sideband locking a bit for CHV/VLV

chv_enable_pll() doesn't need to hold sb_lock for the entire duration of
the function. Drop the lock as soon as possible.

valleyview_set_cdclk() does a potential lock+unlock+lock+unlock cycle
with sb_lock. Grab the lock a few lines earlier so we can make do
with a single lock+unlock cycle always.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>