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authorChris Wilson <chris@chris-wilson.co.uk>2011-01-14 09:46:38 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2011-01-14 09:51:05 +0000
commit1591192d3a17adeebd03be0ce5888b88bddfaf89 (patch)
tree8df7fdb4e5480838fff9162adb09904f2b107986 /drivers/gpu/drm/i915/i915_gem_execbuffer.c
parent595dad76a0d213adc3dbe4f463f7887e905082b9 (diff)
drm/i915: Disable GPU semaphores on SandyBridge mobile
Hopefully, this is a temporary measure whilst the root cause is understood. At the moment, we experience a hard hang whilst looping urbanterror that has been identified as a result of the use of semaphores, but so far only on SNB mobile. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32752 Tested-by: mengmeng.meng@intel.com Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_execbuffer.c')
-rw-r--r--drivers/gpu/drm/i915/i915_gem_execbuffer.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 8db88e34ef7..dcfdf4151b6 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -772,7 +772,8 @@ i915_gem_execbuffer_sync_rings(struct drm_i915_gem_object *obj,
if (from == NULL || to == from)
return 0;
- if (INTEL_INFO(obj->base.dev)->gen < 6)
+ /* XXX gpu semaphores are currently causing hard hangs on SNB mobile */
+ if (INTEL_INFO(obj->base.dev)->gen < 6 || IS_MOBILE(obj->base.dev))
return i915_gem_object_wait_rendering(obj, true);
idx = intel_ring_sync_index(from, to);