drm/i915: disable contexts on old HW
This got dropped as a result of the last round of comments. I didn't
test it on unsupported HW (which this is likely the case).
Note that this prevents hw context from blowing up on any pre-gen6 hw.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=51142
[danvet: Added note and buglink.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 6dc426a..8fb8cd8 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -243,8 +243,10 @@
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t ctx_size;
- if (!HAS_HW_CONTEXTS(dev))
+ if (!HAS_HW_CONTEXTS(dev)) {
+ dev_priv->hw_contexts_disabled = true;
return;
+ }
/* If called from reset, or thaw... we've been here already */
if (dev_priv->hw_contexts_disabled ||