... so that user-space can know that the whole nodes have been created. Unfortunately, this can't be implemented easily in race-free way, so it's a kind of compromise.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/hda/hdac_sysfs.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/sound/hda/hdac_sysfs.c b/sound/hda/hdac_sysfs.c index b358d5157802..18aea43d230d 100644 --- a/sound/hda/hdac_sysfs.c +++ b/sound/hda/hdac_sysfs.c @@ -313,12 +313,12 @@ static void widget_tree_free(struct hdac_device *codec)
if (!tree) return; + free_widget_node(tree->afg, &widget_afg_group); if (tree->nodes) { for (p = tree->nodes; *p; p++) free_widget_node(*p, &widget_node_group); kfree(tree->nodes); } - free_widget_node(tree->afg, &widget_afg_group); if (tree->root) kobject_put(tree->root); kfree(tree); @@ -362,13 +362,6 @@ static int widget_tree_create(struct hdac_device *codec) if (!tree->root) return -ENOMEM;
- if (codec->afg) { - err = add_widget_node(tree->root, codec->afg, - &widget_afg_group, &tree->afg); - if (err < 0) - return err; - } - tree->nodes = kcalloc(codec->num_nodes + 1, sizeof(*tree->nodes), GFP_KERNEL); if (!tree->nodes) @@ -381,6 +374,13 @@ static int widget_tree_create(struct hdac_device *codec) return err; }
+ if (codec->afg) { + err = add_widget_node(tree->root, codec->afg, + &widget_afg_group, &tree->afg); + if (err < 0) + return err; + } + kobject_uevent(tree->root, KOBJ_CHANGE); return 0; }