diff options
| author | Dave Gordon <david.s.gordon@intel.com> | 2016-06-13 17:57:30 +0100 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2016-06-14 15:04:07 +0100 |
| commit | dd16107f91a80bfee96f96737cf94003b8817ee2 (patch) | |
| tree | d9762b143422b294cc5b63d1e0318f1518da545e | |
| parent | 072a21cfe0914d0fea771b7d20713248d2d794aa (diff) | |
drm/i915/guc: remove writes to GEN8_DRBREG registers
These registers are not actually writable by the CPU; only the GuC can
actually program them. So let's not do writes that have no effect.
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_guc_submission.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c index 21daaa5d8f30..1589fe940e74 100644 --- a/drivers/gpu/drm/i915/i915_guc_submission.c +++ b/drivers/gpu/drm/i915/i915_guc_submission.c @@ -252,14 +252,9 @@ static void guc_disable_doorbell(struct intel_guc *guc, doorbell->db_status = GUC_DOORBELL_DISABLED; - I915_WRITE(drbreg, I915_READ(drbreg) & ~GEN8_DRB_VALID); - value = I915_READ(drbreg); WARN_ON((value & GEN8_DRB_VALID) != 0); - I915_WRITE(GEN8_DRBREGU(client->doorbell_id), 0); - I915_WRITE(drbreg, 0); - /* XXX: wait for any interrupts */ /* XXX: wait for workqueue to drain */ } |