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drm/i915/gt: Don't flush the tasklet if not setup

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If the tasklet is not being used, don't try and flush it.

Fixes: 5948938700 ("drm/i915/gt: Add a safety submission flush in the heartbeat")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200615183935.17389-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-06-15 19:39:35 +01:00
parent 5a7eeb8ba1
commit 570af07d79
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/gt/intel_engine_cs.c
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@ -1094,6 +1094,9 @@ void intel_engine_flush_submission(struct intel_engine_cs *engine)
{
struct tasklet_struct *t = &engine->execlists.tasklet;
if (!t->func)
return;
/* Synchronise and wait for the tasklet on another CPU */
tasklet_kill(t);