tree 16c90e4028f09fb52bedc27d7b4fe0b15eb5d742
parent 286fed412a134e76be55899bc628c6fa59cb70da
author Keith Packard <keithp@keithp.com> 1325879318 -0800
committer Keith Packard <keithp@keithp.com> 1327004933 -0800

drm/i915: Hold gt_lock across forcewake register reads

Along with the previous patch to make the reset operation protected by
the gt_lock as well, this ensures that all register read operations
will occur with the forcewake hardware enabled. As an added bonus,
this makes read operations more efficient by taking the spinlock only
once per read instead of twice.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>