Re: [Intel-gfx] linux-next: Tree for Jul 25 [ call-trace: drm | drm-intel related? ]

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On Thu, Jul 25, 2013 at 08:50:59PM +0200, Sedat Dilek wrote:
> Against what tree is this applicable? It is definitely not drm-intel-nightly.

Applied cleanly to nightly here, but just in case here's a rebased version:

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 3a5d4ba..5818fe8 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1527,30 +1527,39 @@ i915_gem_mmap_gtt(struct drm_file *file,
 	struct drm_i915_gem_object *obj;
 	int ret;
 
+	printk(KERN_ERR "Hello!\n");
+
 	ret = i915_mutex_lock_interruptible(dev);
-	if (ret)
+	if (ret) {
+		DRM_DEBUG_DRIVER("interrupted: ret=%d\n", ret);
 		return ret;
+	}
 
 	obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
 	if (&obj->base == NULL) {
+		DRM_DEBUG_DRIVER("Unknown object handle %d\n", handle);
 		ret = -ENOENT;
 		goto unlock;
 	}
 
 	if (obj->base.size > dev_priv->gtt.mappable_end) {
+		DRM_DEBUG_DRIVER("Object (%d) larger than mappable aperture (%d) > %d\n",
+				(int)obj->base.size, (int)dev_priv->gtt.mappable_end);
 		ret = -E2BIG;
 		goto out;
 	}
 
 	if (obj->madv != I915_MADV_WILLNEED) {
-		DRM_ERROR("Attempting to mmap a purgeable buffer\n");
+		DRM_DEBUG_DRIVER("Attempting to mmap a purgeable buffer\n");
 		ret = -EINVAL;
 		goto out;
 	}
 
 	ret = i915_gem_object_create_mmap_offset(obj);
-	if (ret)
+	if (ret) {
+		DRM_DEBUG_DRIVER("Failed to allocate mmap offset (ret=%d)\n", ret);
 		goto out;
+	}
 
 	*offset = drm_vma_node_offset_addr(&obj->base.vma_node);
 
@@ -1558,6 +1567,7 @@ out:
 	drm_gem_object_unreference(&obj->base);
 unlock:
 	mutex_unlock(&dev->struct_mutex);
+	DRM_DEBUG_DRIVER("done, ret=%d\n", ret);
 	return ret;
 }

-- 
Chris Wilson, Intel Open Source Technology Centre
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