add audio

hc

2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/sound/hda/hdac_sysfs.c
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@@ -346,8 +346,10 @@
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 		return -ENOMEM;
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 	kobject_init(kobj, &widget_ktype);
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 	err = kobject_add(kobj, parent, "%02x", nid);
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-	if (err < 0)
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+	if (err < 0) {
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+		kobject_put(kobj);
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 		return err;
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+	}
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 	err = sysfs_create_group(kobj, group);
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 	if (err < 0) {
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 		kobject_put(kobj);
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@@ -395,6 +397,7 @@
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 	return 0;
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 }
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+/* call with codec->widget_lock held */
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 int hda_widget_sysfs_init(struct hdac_device *codec)
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 {
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 	int err;
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@@ -411,11 +414,13 @@
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 	return 0;
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 }
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+/* call with codec->widget_lock held */
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 void hda_widget_sysfs_exit(struct hdac_device *codec)
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 {
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 	widget_tree_free(codec);
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 }
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+/* call with codec->widget_lock held */
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 int hda_widget_sysfs_reinit(struct hdac_device *codec,
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 			    hda_nid_t start_nid, int num_nodes)
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 {
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@@ -425,7 +430,7 @@
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 	int i;
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 	if (!codec->widgets)
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-		return hda_widget_sysfs_init(codec);
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+		return 0;
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 	tree = kmemdup(codec->widgets, sizeof(*tree), GFP_KERNEL);
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 	if (!tree)