ALSA: hda: Unexport some local helper functions

snd_hdac_bus_queue_event() and snd_hdac_bus_exec_verb() are used only
internally in HD-audio core.  Let's drop the exports and move the
declarations into local.h.

Link: https://lore.kernel.org/r/20200516062854.22141-3-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

include/sound/hdaudio.h

@@ -372,11 +372,8 @@ struct hdac_bus {
 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
 		      const struct hdac_bus_ops *ops);
 void snd_hdac_bus_exit(struct hdac_bus *bus);
-int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
-			   unsigned int cmd, unsigned int *res);
 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
 				    unsigned int cmd, unsigned int *res);
-void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
 
 static inline void snd_hdac_codec_link_up(struct hdac_device *codec)
 {

sound/hda/hdac_bus.c

@@ -81,7 +81,6 @@ int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
 	mutex_unlock(&bus->cmd_mutex);
 	return err;
 }
-EXPORT_SYMBOL_GPL(snd_hdac_bus_exec_verb);
 
 /**
  * snd_hdac_bus_exec_verb_unlocked - unlocked version
@@ -150,7 +149,6 @@ void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex)
 
 	schedule_work(&bus->unsol_work);
 }
-EXPORT_SYMBOL_GPL(snd_hdac_bus_queue_event);
 
 /*
  * process queued unsolicited events

sound/hda/hdac_controller.c

@@ -9,6 +9,7 @@
 #include <sound/core.h>
 #include <sound/hdaudio.h>
 #include <sound/hda_register.h>
+#include "local.h"
 
 /* clear CORB read pointer properly */
 static void azx_clear_corbrp(struct hdac_bus *bus)

sound/hda/local.h

@@ -36,6 +36,9 @@ void hda_widget_sysfs_exit(struct hdac_device *codec);
 int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
 void snd_hdac_bus_remove_device(struct hdac_bus *bus,
 				struct hdac_device *codec);
+void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
+int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
+			   unsigned int cmd, unsigned int *res);
 
 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
 		       unsigned int flags, unsigned int *res);