From 9bb2d6f94aeb9a185d69aedbd19421b6da4e3309 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 23 Dec 2008 18:42:32 -0800 Subject: [PATCH] drm/i915: Don't allow objects to get bound while VT switched. This avoids a BUG_ON in the enter_vt path due to objects being in the GTT when we shouldn't have ever let them be (as we're not supposed to touch the device during that time). This was triggered by a change in the 2D driver to use the GTT mapping of objects after pinning them to improve software fallback performance. Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_gem.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index cc2ca5561fe..14afc23a0e2 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1623,6 +1623,8 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) struct drm_mm_node *free_space; int page_count, ret; + if (dev_priv->mm.suspended) + return -EBUSY; if (alignment == 0) alignment = PAGE_SIZE; if (alignment & (PAGE_SIZE - 1)) { @@ -2641,7 +2643,7 @@ i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) if (obj_priv->gtt_space == NULL) { ret = i915_gem_object_bind_to_gtt(obj, alignment); if (ret != 0) { - if (ret != -ERESTARTSYS) + if (ret != -EBUSY && ret != -ERESTARTSYS) DRM_ERROR("Failure to bind: %d", ret); return ret; } @@ -3219,20 +3221,21 @@ i915_gem_entervt_ioctl(struct drm_device *dev, void *data, dev_priv->mm.wedged = 0; } - ret = i915_gem_init_ringbuffer(dev); - if (ret != 0) - return ret; - dev_priv->mm.gtt_mapping = io_mapping_create_wc(dev->agp->base, dev->agp->agp_info.aper_size * 1024 * 1024); mutex_lock(&dev->struct_mutex); + dev_priv->mm.suspended = 0; + + ret = i915_gem_init_ringbuffer(dev); + if (ret != 0) + return ret; + BUG_ON(!list_empty(&dev_priv->mm.active_list)); BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); BUG_ON(!list_empty(&dev_priv->mm.request_list)); - dev_priv->mm.suspended = 0; mutex_unlock(&dev->struct_mutex); drm_irq_install(dev); -- 2.41.1