staging: tidspbridge: remove cmm_init() and cmm_exit()

The cmm module has a cmm_init() and a cmm_exit() whose only purpose is
to keep a reference counting which is not used at all.

This patch removes these functions and the reference count variable.

There is no functional changes.

Signed-off-by: Víctor Manuel Jáquez Leal <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/tidspbridge/include/dspbridge/cmm.h

···
  *      -EPERM:      Failed to initialize critical sect sync object.
  *
  *  Requires:
- *      cmm_init(void) called.
  *      ph_cmm_mgr != NULL.
  *      mgr_attrts->min_block_size >= 4 bytes.
  *  Ensures:
···
  *      Memory resources used by Cmm Mgr are freed.
  */
 extern int cmm_destroy(struct cmm_object *hcmm_mgr, bool force);
-
-/*
- *  ======== cmm_exit ========
- *  Purpose:
- *     Discontinue usage of module. Cleanup CMM module if CMM cRef reaches zero.
- *  Parameters:
- *     n/a
- *  Returns:
- *     n/a
- *  Requires:
- *     CMM is initialized.
- *  Ensures:
- */
-extern void cmm_exit(void);
 
 /*
  *  ======== cmm_free_buf ========
···
  */
 extern int cmm_get_info(struct cmm_object *hcmm_mgr,
 			       struct cmm_info *cmm_info_obj);
-
-/*
- *  ======== cmm_init ========
- *  Purpose:
- *      Initializes private state of CMM module.
- *  Parameters:
- *  Returns:
- *      TRUE if initialized; FALSE if error occurred.
- *  Requires:
- *  Ensures:
- *      CMM initialized.
- */
-extern bool cmm_init(void);
 
 /*
  *  ======== cmm_register_gppsm_seg ========
···
  *      0:        Success.
  *      -EFAULT:    Bad translator handle.
  *  Requires:
- *      (refs > 0)
  *      (paddr != NULL)
  *      (ul_size > 0)
  *  Ensures:
···
  *  Returns:
  *     Valid address on success, else NULL.
  *  Requires:
- *      refs > 0
  *      paddr != NULL
  *      xtype >= CMM_VA2PA) && (xtype <= CMM_DSPPA2PA)
  *  Ensures:

drivers/staging/tidspbridge/pmgr/cmm.c

···
 	u32 client_proc;	/* Process that allocated this mem block */
 };
 
-/*  ----------------------------------- Globals */
-static u32 refs;		/* module reference count */
-
 /*  ----------------------------------- Function Prototypes */
 static void add_to_free_list(struct cmm_allocator *allocator,
 			     struct cmm_mnode *pnode);
···
 }
 
 /*
- *  ======== cmm_exit ========
- *  Purpose:
- *      Discontinue usage of module; free resources when reference count
- *      reaches 0.
- */
-void cmm_exit(void)
-{
-	refs--;
-}
-
-/*
  *  ======== cmm_free_buf ========
  *  Purpose:
  *      Free the given buffer.
···
 	}
 	mutex_unlock(&cmm_mgr_obj->cmm_lock);
 	return status;
-}
-
-/*
- *  ======== cmm_init ========
- *  Purpose:
- *      Initializes private state of CMM module.
- */
-bool cmm_init(void)
-{
-	bool ret = true;
-
-	if (ret)
-		refs++;
-
-	return ret;
 }
 
 /*

drivers/staging/tidspbridge/pmgr/dev.c

···
 {
 	refs--;
 
-	if (refs == 0) {
-		cmm_exit();
+	if (refs == 0)
 		dmm_exit();
-	}
 }
 
 /*
···
  */
 bool dev_init(void)
 {
-	bool cmm_ret, dmm_ret, ret = true;
+	bool ret = true;
 
-	if (refs == 0) {
-		cmm_ret = cmm_init();
-		dmm_ret = dmm_init();
-
-		ret = cmm_ret && dmm_ret;
-
-		if (!ret) {
-			if (cmm_ret)
-				cmm_exit();
-
-			if (dmm_ret)
-				dmm_exit();
-
-		}
-	}
+	if (refs == 0)
+		dmm_init();
 
 	if (ret)
 		refs++;