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| author | Michał Winiarski | 2017-05-23 12:23:59 +0200 |
|---|---|---|
| committer | Chris Wilson | 2017-05-23 12:54:06 +0200 |
| commit | f63078abff0d2927c2f58f22b1082520def70865 (patch) | |
| tree | a63f79a4ea37d078894cd540985a49ef5db3c543 /drivers/gpu/drm/i915/i915_guc_submission.c | |
| parent | drm/i915: Remove misleading comment in request_alloc (diff) | |
| download | kernel-qcow2-linux-f63078abff0d2927c2f58f22b1082520def70865.tar.gz kernel-qcow2-linux-f63078abff0d2927c2f58f22b1082520def70865.tar.xz kernel-qcow2-linux-f63078abff0d2927c2f58f22b1082520def70865.zip | |
drm/i915/guc: Skip port assign on first iteration of GuC dequeue
If port[0] is occupied and we're trying to dequeue request from
different context, we will inevitably hit BUG_ON in port_assign.
Let's skip it - similar to what we're doing in execlists counterpart.
Fixes: 77f0d0e925e8a0 ("drm/i915/execlists: Pack the count into the low bits of the port.request")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Wajdeczko <michal.wajdeczko@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170523102400.9614-2-michal.winiarski@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_guc_submission.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_guc_submission.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c index 777f48e9bb33..e6e0c6ef1084 100644 --- a/drivers/gpu/drm/i915/i915_guc_submission.c +++ b/drivers/gpu/drm/i915/i915_guc_submission.c @@ -681,7 +681,8 @@ static bool i915_guc_dequeue(struct intel_engine_cs *engine) goto done; } - port_assign(port, last); + if (submit) + port_assign(port, last); port++; } |