drm/i915: Cut two args to set_to_gpu_domain that confused this tricky path.

While not strictly required, it helped while thinking about the following
change.  This change should be invariant.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 16 insertions, 22 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index ac534c9a2f8..02ef50d512d 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -34,10 +34,6 @@
 
 #define I915_GEM_GPU_DOMAINS    (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
 
-static void
-i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
-                                  uint32_t read_domains,
-                                  uint32_t write_domain);
 static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj);
 static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj);
 static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj);
@@ -2021,30 +2017,28 @@ i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write)
  *              drm_agp_chipset_flush
  */
 static void
-i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
-                                  uint32_t read_domains,
-                                  uint32_t write_domain)
+i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj)
 {
         struct drm_device               *dev = obj->dev;
         struct drm_i915_gem_object      *obj_priv = obj->driver_private;
         uint32_t                        invalidate_domains = 0;
         uint32_t                        flush_domains = 0;
 
-        BUG_ON(read_domains & I915_GEM_DOMAIN_CPU);
-        BUG_ON(write_domain == I915_GEM_DOMAIN_CPU);
+        BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU);
+        BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU);
 
 #if WATCH_BUF
         DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n",
                  __func__, obj,
-                 obj->read_domains, read_domains,
-                 obj->write_domain, write_domain);
+                 obj->read_domains, obj->pending_read_domains,
+                 obj->write_domain, obj->pending_write_domain);
 #endif
         /*
          * If the object isn't moving to a new write domain,
          * let the object stay in multiple read domains
          */
-        if (write_domain == 0)
-                read_domains |= obj->read_domains;
+        if (obj->pending_write_domain == 0)
+                obj->pending_read_domains |= obj->read_domains;
         else
                 obj_priv->dirty = 1;
 
@@ -2054,15 +2048,17 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
          * any read domains which differ from the old
          * write domain
          */
-        if (obj->write_domain && obj->write_domain != read_domains) {
+        if (obj->write_domain &&
+            obj->write_domain != obj->pending_read_domains) {
                 flush_domains |= obj->write_domain;
-                invalidate_domains |= read_domains & ~obj->write_domain;
+                invalidate_domains |=
+                        obj->pending_read_domains & ~obj->write_domain;
         }
         /*
          * Invalidate any read caches which may have
          * stale data. That is, any new read domains.
          */
-        invalidate_domains |= read_domains & ~obj->read_domains;
+        invalidate_domains |= obj->pending_read_domains & ~obj->read_domains;
         if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) {
 #if WATCH_BUF
                 DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n",
@@ -2071,9 +2067,9 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
                 i915_gem_clflush_object(obj);
         }
 
-        if ((write_domain | flush_domains) != 0)
-                obj->write_domain = write_domain;
-        obj->read_domains = read_domains;
+        if ((obj->pending_write_domain | flush_domains) != 0)
+                obj->write_domain = obj->pending_write_domain;
+        obj->read_domains = obj->pending_read_domains;
 
         dev->invalidate_domains |= invalidate_domains;
         dev->flush_domains |= flush_domains;
@@ -2583,9 +2579,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
                 struct drm_gem_object *obj = object_list[i];
 
                 /* Compute new gpu domains and update invalidate/flush */
-                i915_gem_object_set_to_gpu_domain(obj,
-                                                  obj->pending_read_domains,
-                                                  obj->pending_write_domain);
+                i915_gem_object_set_to_gpu_domain(obj);
         }
 
         i915_verify_inactive(dev, __FILE__, __LINE__);