Merge branch 'topic/usb-audio' into for-linus

[pandora-kernel.git] / drivers / gpu / drm / i915 / i915_dma.c

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 051134c..0ccb63e 100644 (file)
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -987,12 +987,6 @@ static int i915_load_modeset_init(struct drm_device *dev)
        int fb_bar = IS_I9XX(dev) ? 2 : 0;
        int ret = 0;
 
-       dev->devname = kstrdup(DRIVER_NAME, GFP_KERNEL);
-       if (!dev->devname) {
-               ret = -ENOMEM;
-               goto out;
-       }
-
        dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
                0xff000000;
 
@@ -1006,17 +1000,25 @@ static int i915_load_modeset_init(struct drm_device *dev)
 
        ret = i915_probe_agp(dev, &agp_size, &prealloc_size);
        if (ret)
-               goto kfree_devname;
+               goto out;
 
        /* Basic memrange allocator for stolen space (aka vram) */
        drm_mm_init(&dev_priv->vram, 0, prealloc_size);
 
-       /* Let GEM Manage from end of prealloc space to end of aperture */
-       i915_gem_do_init(dev, prealloc_size, agp_size);
+       /* Let GEM Manage from end of prealloc space to end of aperture.
+        *
+        * However, leave one page at the end still bound to the scratch page.
+        * There are a number of places where the hardware apparently
+        * prefetches past the end of the object, and we've seen multiple
+        * hangs with the GPU head pointer stuck in a batchbuffer bound
+        * at the last page of the aperture.  One page should be enough to
+        * keep any prefetching inside of the aperture.
+        */
+       i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
 
        ret = i915_gem_init_ringbuffer(dev);
        if (ret)
-               goto kfree_devname;
+               goto out;
 
        /* Allow hardware batchbuffers unless told otherwise.
         */
@@ -1048,8 +1050,6 @@ static int i915_load_modeset_init(struct drm_device *dev)
 
 destroy_ringbuffer:
        i915_gem_cleanup_ringbuffer(dev);
-kfree_devname:
-       kfree(dev->devname);
 out:
        return ret;
 }
@@ -1350,6 +1350,7 @@ struct drm_ioctl_desc i915_ioctls[] = {
        DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0),
        DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0),
        DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
+       DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
 };
 
 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);