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drm/i915/gt: Drop a defunct timeline assertion 

intel_timeline_enter() has been decoupled from intel_timeline_pin() and
both enter/exit & pin/unpin are allowed [read expected] to run
concurrently with one another. The assertion that they had better not is
stale.

Closes: https://gitlab.freedesktop.org/drm/intel/issues/940
References: a6edbca74b ("drm/i915/gt: Close race between engine_park and intel_gt_retire_requests")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200107143826.3298401-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-01-07 14:38:26 +00:00
parent 542dfab53e
commit 6e8b0f53c3
1 changed files with 0 additions and 1 deletions
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1
drivers/gpu/drm/i915/gt/intel_timeline.c
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@ -348,7 +348,6 @@ void intel_timeline_enter(struct intel_timeline *tl)
* use atomic to manipulate tl->active_count. * use atomic to manipulate tl->active_count.
*/ */
lockdep_assert_held(&tl->mutex); lockdep_assert_held(&tl->mutex);
GEM_BUG_ON(!atomic_read(&tl->pin_count));
if (atomic_add_unless(&tl->active_count, 1, 0)) if (atomic_add_unless(&tl->active_count, 1, 0))
return; return;