drm/i915: Avoid early timeout during AUX transfers
authorImre Deak <imre.deak@intel.com>
Tue, 28 Jun 2016 10:37:33 +0000 (13:37 +0300)
committerImre Deak <imre.deak@intel.com>
Tue, 28 Jun 2016 19:10:26 +0000 (22:10 +0300)
commit713a6b668932213247b394559bc229cd0fec2777
tree979a63c593021e6b913ac6d887e852550e1e8e11
parentf53dd63f1119a98a16d1a5a7cb3277a2f1ff483d
drm/i915: Avoid early timeout during AUX transfers

Since wait_for_atomic doesn't re-check the wait-for condition after
expiry of the timeout it can fail when called from non-atomic context
even if the condition is set correctly before the expiry. Fix this by
using the non-atomic wait_for instead.

Due to the relatively long 10ms timeout, probably this didn't cause any
real problems, but fix it in any case for consistency.

Fixes: 0351b93992aa ("drm/i915: Do not lie about atomic timeout granularity")
CC: Chris Wilson <chris@chris-wilson.co.uk>
CC: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
CC: drm-intel-fixes@lists.freedesktop.org
Link: http://patchwork.freedesktop.org/patch/msgid/1467110253-16046-5-git-send-email-imre.deak@intel.com
drivers/gpu/drm/i915/intel_dp.c