drm/i915: Execlists cannot pin a context without the object

Given that the intel_lr_context_pin cannot succeed without the object,
we cannot reach intel_lr_context_unpin() without first allocating that
object - so we can remove the redundant test.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1456485751-15213-1-git-send-email-tvrtko.ursulin@linux.intel.com

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index b594d89..6a978ce 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1145,10 +1145,6 @@ void intel_lr_context_unpin(struct intel_context *ctx,
        struct drm_i915_gem_object *ctx_obj = ctx->engine[engine->id].state;
 
        WARN_ON(!mutex_is_locked(&ctx->i915->dev->struct_mutex));
-
-       if (WARN_ON_ONCE(!ctx_obj))
-               return;
-
        if (--ctx->engine[engine->id].pin_count == 0) {
                kunmap(kmap_to_page(ctx->engine[engine->id].lrc_reg_state));
                intel_unpin_ringbuffer_obj(ctx->engine[engine->id].ringbuf);