-
Chris Wilson authored
If the CSB head/tail pointers are unchanged, we can skip the update of the CSB register afterwards. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170124110009.28947-5-chris@chris-wilson.co.uk
a37951ac