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drm/i915/execlists: HWACK checking superseded checking port[0].count

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The HWACK bit more generically solves the problem of resubmitting ESLP
while the hardware is still processing the current ELSP write. We no
longer need to check port[0].count itself.

References: ba74cb10c775 ("drm/i915/execlists: Delay writing to ELSP until HW has processed the previous write")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180517115647.17205-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-05-17 12:56:47 +01:00
parent b45a258897
commit 57877b7073
1 changed files with 0 additions and 2 deletions
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2
drivers/gpu/drm/i915/intel_lrc.c
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@ -612,8 +612,6 @@ static bool __execlists_dequeue(struct intel_engine_cs *engine)
GEM_BUG_ON(!execlists_is_active(execlists,
EXECLISTS_ACTIVE_USER));
GEM_BUG_ON(!port_count(&port[0]));
if (port_count(&port[0]) > 1)
return false;
/*
* If we write to ELSP a second time before the HW has had