From: Keith Packard Date: Sat, 25 Jun 2011 04:02:59 +0000 (-0700) Subject: drm/i915: i915_gem_object_finish_gtt must always release gtt mmap X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b97c3d9c1655522be3adc5ae1aa153a18467e924;p=linux-beck.git drm/i915: i915_gem_object_finish_gtt must always release gtt mmap Even if the object is no longer in the GTT domain, there may still be a user space mapping which needs to be released. Without this fix, render-based text (mostly in firefox) would occasionally get corrupted when the system was under load. Signed-off-by: Keith Packard --- diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index b29e0f2b780a..6026817372da 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2155,15 +2155,15 @@ static void i915_gem_object_finish_gtt(struct drm_i915_gem_object *obj) { u32 old_write_domain, old_read_domains; - if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) - return; - /* Act a barrier for all accesses through the GTT */ mb(); /* Force a pagefault for domain tracking on next user access */ i915_gem_release_mmap(obj); + if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) + return; + old_read_domains = obj->base.read_domains; old_write_domain = obj->base.write_domain;