drm/ttm: Initialize debugfs from ttm_global_init()

[linux-2.6-microblaze.git] / drivers / gpu / drm / ttm / ttm_device.c

diff --git a/drivers/gpu/drm/ttm/ttm_device.c b/drivers/gpu/drm/ttm/ttm_device.c
index 519deea..74e3b46 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_device.c
+++ b/drivers/gpu/drm/ttm/ttm_device.c
@@ -44,6 +44,8 @@ static unsigned ttm_glob_use_count;
 struct ttm_global ttm_glob;
 EXPORT_SYMBOL(ttm_glob);
 
+struct dentry *ttm_debugfs_root;
+
 static void ttm_global_release(void)
 {
        struct ttm_global *glob = &ttm_glob;
@@ -53,6 +55,7 @@ static void ttm_global_release(void)
                goto out;
 
        ttm_pool_mgr_fini();
+       debugfs_remove(ttm_debugfs_root);
 
        __free_page(glob->dummy_read_page);
        memset(glob, 0, sizeof(*glob));
@@ -73,6 +76,13 @@ static int ttm_global_init(void)
 
        si_meminfo(&si);
 
+       ttm_debugfs_root = debugfs_create_dir("ttm", NULL);
+       if (IS_ERR(ttm_debugfs_root)) {
+               ret = PTR_ERR(ttm_debugfs_root);
+               ttm_debugfs_root = NULL;
+               goto out;
+       }
+
        /* Limit the number of pages in the pool to about 50% of the total
         * system memory.
         */
@@ -100,6 +110,8 @@ static int ttm_global_init(void)
        debugfs_create_atomic_t("buffer_objects", 0444, ttm_debugfs_root,
                                &glob->bo_count);
 out:
+       if (ret && ttm_debugfs_root)
+               debugfs_remove(ttm_debugfs_root);
        if (ret)
                --ttm_glob_use_count;
        mutex_unlock(&ttm_global_mutex);