drm/i915: Stop second guessing the caller for intel_uncore_wait_for_register()
authorChris Wilson <chris@chris-wilson.co.uk>
Tue, 11 Apr 2017 11:27:05 +0000 (12:27 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Tue, 11 Apr 2017 11:43:37 +0000 (12:43 +0100)
commit84d84cb7e20d3d2c6413c5f75634e88eb68a3f97
tree1de7900724c36eb542f2da7cec748e263eb78745
parent6976e74b5fa12430b36c3b0f8afd7e8e695be0ab
drm/i915: Stop second guessing the caller for intel_uncore_wait_for_register()

Allow the caller to use the fast_timeout_us to specify how long to wait
within the atomic section, rather than transparently switching to a
sleeping loop for larger values. This is required as some callsites may
need a long wait and are in an atomic section.

v2: Reinforce kerneldoc fast_timeout_us limit with a GEM_BUG_ON

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170411112705.12656-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
drivers/gpu/drm/i915/intel_uncore.c