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drm/i915: Redo "Remove i915_request.lock requirement for execution callbacks"

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The reordering and rebasing of commit 2e4c6c1a9d ("drm/i915: Remove
i915_request.lock requirement for execution callbacks") caused it to
revert an earlier correction. Let us restore commit 99f0a640d464
("drm/i915: Remove requirement for holding i915_request.lock for
breadcrumbs")

Fixes: 2e4c6c1a9d ("drm/i915: Remove i915_request.lock requirement for execution callbacks")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200925101107.27869-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2020-09-25 11:11:06 +01:00
parent 102f5aa491
commit 35faeb7de9
1 changed files with 2 additions and 10 deletions
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12
drivers/gpu/drm/i915/i915_request.c
View File

@ -593,16 +593,8 @@ xfer:
__notify_execute_cb_irq(request);
/* We may be recursing from the signal callback of another i915 fence */
if (!i915_request_signaled(request)) {
spin_lock_nested(&request->lock, SINGLE_DEPTH_NESTING);
if (test_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
&request->fence.flags) &&
!i915_request_enable_breadcrumb(request))
intel_engine_signal_breadcrumbs(engine);
spin_unlock(&request->lock);
}
if (test_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT, &request->fence.flags))
i915_request_enable_breadcrumb(request);
return result;
}