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)
committerJani Nikula <jani.nikula@intel.com>
Wed, 29 Jun 2016 08:18:16 +0000 (11:18 +0300)
commitba34a65324259082dc6d2924cb82d562db1c6a6b
treec1c00ace2b80e4d9a46f67962dd5f2ce834c70a5
parentfa7c13e5b1e2076b0ec716ed584ab76f9e65b7a6
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
(cherry picked from commit 713a6b668932213247b394559bc229cd0fec2777)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_dp.c