tree 75125c24589ef723484b11b2ed760a850db2ca91
parent 69e4f900be175fd80fe69221a329c8993b16925b
author Ville Syrjälä <ville.syrjala@linux.intel.com> 1380047181 +0300
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1381402010 +0200

drm/i915: Don't underflow bestppm

We do 'bestppm - 10' in vlv_find_best_dpll() but never check whether
that might underflow. Add such a check.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>