diff options
| author | Imre Deak <imre.deak@intel.com> | 2016-06-28 13:37:33 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2016-06-28 22:10:26 +0300 |
| commit | 713a6b668932213247b394559bc229cd0fec2777 (patch) | |
| tree | 979a63c593021e6b913ac6d887e852550e1e8e11 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | f53dd63f1119a98a16d1a5a7cb3277a2f1ff483d (diff) | |
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
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index c3742a04f611..6d586b72da88 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -727,7 +727,7 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, msecs_to_jiffies_timeout(10)); else - done = wait_for_atomic(C, 10) == 0; + done = wait_for(C, 10) == 0; if (!done) DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", has_aux_irq); |