ALSA: hdac: Add API for removing hdac extended device

The HDAC extended device objects are created by HDAC extended bus on probe.
When controller is removed they should be removed as well, so add API
snd_hdac_ext_bus_device_remove for this

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
index 0f89df1511dc5d9cfb19be3d8c4dec8342f65aa5..148267b76ab7752b94171bd9f4f4b1c2a5e0d788 100644 (file)
--- a/include/sound/hdaudio_ext.h
+++ b/include/sound/hdaudio_ext.h
@@ -34,6 +34,7 @@ int snd_hdac_ext_bus_init(struct hdac_ext_bus *sbus, struct device *dev,
 void snd_hdac_ext_bus_exit(struct hdac_ext_bus *sbus);
 int snd_hdac_ext_bus_device_init(struct hdac_ext_bus *sbus, int addr);
 void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev);
+void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus);
 
 #define ebus_to_hbus(ebus)     (&(ebus)->bus)
 #define hbus_to_ebus(_bus) \

diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
index 0aa5d9eb6c3fd37d20185f41694e510bec1eff27..cf69202f7da0b59e571486097e63dc3456f3d9ad 100644 (file)
--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -172,3 +172,22 @@ void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev)
        kfree(hdev);
 }
 EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_exit);
+
+/**
+ * snd_hdac_ext_bus_device_remove - remove HD-audio extended codec base devices
+ *
+ * @ebus: HD-audio extended bus
+ */
+void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus)
+{
+       struct hdac_device *codec, *__codec;
+       /*
+        * we need to remove all the codec devices objects created in the
+        * snd_hdac_ext_bus_device_init
+        */
+       list_for_each_entry_safe(codec, __codec, &ebus->bus.codec_list, list) {
+               snd_hdac_device_unregister(codec);
+               put_device(&codec->dev);
+       }
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove);