diff options
Diffstat (limited to 'linux-core/drm_fence.c')
| -rw-r--r-- | linux-core/drm_fence.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/linux-core/drm_fence.c b/linux-core/drm_fence.c index 70baad9f..b5fc2235 100644 --- a/linux-core/drm_fence.c +++ b/linux-core/drm_fence.c @@ -129,11 +129,14 @@ void drm_fence_usage_deref_locked(drm_device_t * dev, { drm_fence_manager_t *fm = &dev->fm; + DRM_ASSERT_LOCKED(&dev->struct_mutex); + if (atomic_dec_and_test(&fence->usage)) { drm_fence_unring(dev, &fence->ring); DRM_DEBUG("Destroyed a fence object 0x%08lx\n", fence->base.hash.key); atomic_dec(&fm->count); + BUG_ON(!list_empty(&fence->base.list)); drm_ctl_free(fence, sizeof(*fence), DRM_MEM_FENCE); } } @@ -148,6 +151,7 @@ void drm_fence_usage_deref_unlocked(drm_device_t * dev, if (atomic_read(&fence->usage) == 0) { drm_fence_unring(dev, &fence->ring); atomic_dec(&fm->count); + BUG_ON(!list_empty(&fence->base.list)); drm_ctl_free(fence, sizeof(*fence), DRM_MEM_FENCE); } mutex_unlock(&dev->struct_mutex); @@ -448,15 +452,16 @@ int drm_fence_add_user_object(drm_file_t * priv, drm_fence_object_t * fence, mutex_lock(&dev->struct_mutex); ret = drm_add_user_object(priv, &fence->base, shareable); - mutex_unlock(&dev->struct_mutex); if (ret) - return ret; + goto out; + atomic_inc(&fence->usage); fence->base.type = drm_fence_type; fence->base.remove = &drm_fence_object_destroy; DRM_DEBUG("Fence 0x%08lx created\n", fence->base.hash.key); - return 0; +out: + mutex_unlock(&dev->struct_mutex); + return ret; } - EXPORT_SYMBOL(drm_fence_add_user_object); int drm_fence_object_create(drm_device_t * dev, uint32_t class, uint32_t type, @@ -466,7 +471,7 @@ int drm_fence_object_create(drm_device_t * dev, uint32_t class, uint32_t type, int ret; drm_fence_manager_t *fm = &dev->fm; - fence = drm_ctl_alloc(sizeof(*fence), DRM_MEM_FENCE); + fence = drm_ctl_calloc(1, sizeof(*fence), DRM_MEM_FENCE); if (!fence) return -ENOMEM; ret = drm_fence_object_init(dev, class, type, flags, fence); @@ -566,13 +571,8 @@ int drm_fence_ioctl(DRM_IOCTL_ARGS) drm_fence_usage_deref_unlocked(dev, fence); return ret; } - - /* - * usage > 0. No need to lock dev->struct_mutex; - */ - - atomic_inc(&fence->usage); arg.handle = fence->base.hash.key; + break; case drm_fence_destroy: mutex_lock(&dev->struct_mutex); @@ -637,7 +637,6 @@ int drm_fence_ioctl(DRM_IOCTL_ARGS) DRM_FENCE_FLAG_SHAREABLE); if (ret) return ret; - atomic_inc(&fence->usage); arg.handle = fence->base.hash.key; break; default: |