From ad086c833d00ef3be56ec554b1061f19e87a6210 Mon Sep 17 00:00:00 2001 From: "Owain G. Ainsworth" Date: Fri, 20 Feb 2009 08:30:19 +0000 Subject: [PATCH] i915/drm: Remove two redundant agp_chipset_flushes agp_chipset_flush() is for flushing the intel GMCH write cache via the IFP, these two uses are for when we're getting the object into the cpu READ domain, and thus should not be needed. This confused me when I was getting my head around the code. With thanks to airlied for helping me check my mental picture of how the flushes and clflushes are supposed to be used. Signed-off-by: Owain G. Ainsworth Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_gem.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index f135c903305..b52cba0f16d 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2381,7 +2381,6 @@ i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) { - struct drm_device *dev = obj->dev; int ret; i915_gem_object_flush_gpu_write_domain(obj); @@ -2400,7 +2399,6 @@ i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) /* Flush the CPU cache if it's still invalid. */ if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { i915_gem_clflush_object(obj); - drm_agp_chipset_flush(dev); obj->read_domains |= I915_GEM_DOMAIN_CPU; } @@ -2612,7 +2610,6 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj) static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) { - struct drm_device *dev = obj->dev; struct drm_i915_gem_object *obj_priv = obj->driver_private; if (!obj_priv->page_cpu_valid) @@ -2628,7 +2625,6 @@ i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) continue; drm_clflush_pages(obj_priv->pages + i, 1); } - drm_agp_chipset_flush(dev); } /* Free the page_cpu_valid mappings which are now stale, whether -- 2.41.1