staging: tidspbridge: remove strm_init() and strm_exit()

The strm module has a strm_init() and a strm_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 <vjaquez@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 2 insertions, 71 deletions

diff --git a/drivers/staging/tidspbridge/include/dspbridge/strm.h b/drivers/staging/tidspbridge/include/dspbridge/strm.h
index 613fe53dd23..dacf0c234fd 100644
--- a/drivers/staging/tidspbridge/include/dspbridge/strm.h
+++ b/drivers/staging/tidspbridge/include/dspbridge/strm.h
@@ -40,7 +40,6 @@
  *      -EPERM:      Failure occurred, unable to allocate buffers.
  *      -EINVAL:      usize must be > 0 bytes.
  *  Requires:
- *      strm_init(void) called.
  *      ap_buffer != NULL.
  *  Ensures:
  */
@@ -63,7 +62,6 @@ extern int strm_allocate_buffer(struct strm_res_object *strmres,
  *                      been reclaimed.
  *      -EPERM:      Failure to close stream.
  *  Requires:
- *      strm_init(void) called.
  *  Ensures:
  */
 extern int strm_close(struct strm_res_object *strmres,
@@ -83,7 +81,6 @@ extern int strm_close(struct strm_res_object *strmres,
  *      -ENOMEM:    Insufficient memory for requested resources.
  *      -EPERM:      General failure.
  *  Requires:
- *      strm_init(void) called.
  *      strm_man != NULL.
  *      dev_obj != NULL.
  *  Ensures:
@@ -101,7 +98,6 @@ extern int strm_create(struct strm_mgr **strm_man,
  *      strm_mgr_obj:       Handle to STRM manager object from strm_create.
  *  Returns:
  *  Requires:
- *      strm_init(void) called.
  *      Valid strm_mgr_obj.
  *  Ensures:
  *      strm_mgr_obj is not valid.
@@ -109,18 +105,6 @@ extern int strm_create(struct strm_mgr **strm_man,
 extern void strm_delete(struct strm_mgr *strm_mgr_obj);
 
 /*
- *  ======== strm_exit ========
- *  Purpose:
- *      Discontinue usage of STRM module.
- *  Parameters:
- *  Returns:
- *  Requires:
- *      strm_init(void) successfully called before.
- *  Ensures:
- */
-extern void strm_exit(void);
-
-/*
  *  ======== strm_free_buffer ========
  *  Purpose:
  *      Free buffer(s) allocated with strm_allocate_buffer.
@@ -133,7 +117,6 @@ extern void strm_exit(void);
  *      -EFAULT:    Invalid stream handle.
  *      -EPERM:      Failure occurred, unable to free buffers.
  *  Requires:
- *      strm_init(void) called.
  *      ap_buffer != NULL.
  *  Ensures:
  */
@@ -156,7 +139,6 @@ extern int strm_free_buffer(struct strm_res_object *strmres,
  *      -EINVAL:          stream_info_size < sizeof(dsp_streaminfo).
  *      -EPERM:          Unable to get stream info.
  *  Requires:
- *      strm_init(void) called.
  *      stream_info != NULL.
  *  Ensures:
  */
@@ -184,24 +166,11 @@ extern int strm_get_info(struct strm_object *stream_obj,
  *      -ETIME:   A timeout occurred before the stream could be idled.
  *      -EPERM:      Unable to idle stream.
  *  Requires:
- *      strm_init(void) called.
  *  Ensures:
  */
 extern int strm_idle(struct strm_object *stream_obj, bool flush_data);
 
 /*
- *  ======== strm_init ========
- *  Purpose:
- *      Initialize the STRM module.
- *  Parameters:
- *  Returns:
- *      TRUE if initialization succeeded, FALSE otherwise.
- *  Requires:
- *  Ensures:
- */
-extern bool strm_init(void);
-
-/*
  *  ======== strm_issue ========
  *  Purpose:
  *      Send a buffer of data to a stream.
@@ -217,8 +186,7 @@ extern bool strm_init(void);
  *      -ENOSR:    The stream is full.
  *      -EPERM:          Failure occurred, unable to issue buffer.
  *  Requires:
- *      strm_init(void) called.
- *      pbuf != NULL.
+*      pbuf != NULL.
  *  Ensures:
  */
 extern int strm_issue(struct strm_object *stream_obj, u8 * pbuf,
@@ -244,7 +212,6 @@ extern int strm_issue(struct strm_object *stream_obj, u8 * pbuf,
  *              Unable to open stream.
  *      -EINVAL:     Invalid index.
  *  Requires:
- *      strm_init(void) called.
  *      strmres != NULL.
  *      pattr != NULL.
  *  Ensures:
@@ -275,7 +242,6 @@ extern int strm_open(struct node_object *hnode, u32 dir,
  *                      retrieved.
  *      -EPERM:      Failure occurred, unable to reclaim buffer.
  *  Requires:
- *      strm_init(void) called.
  *      buf_ptr != NULL.
  *      nbytes != NULL.
  *      pdw_arg != NULL.
@@ -302,7 +268,6 @@ extern int strm_reclaim(struct strm_object *stream_obj,
  *      -ENOSYS:   Notification type specified by notify_type is not
  *                      supported.
  *  Requires:
- *      strm_init(void) called.
  *      hnotification != NULL.
  *  Ensures:
  */
@@ -328,7 +293,6 @@ extern int strm_register_notify(struct strm_object *stream_obj,
  *      -ETIME:   A timeout occurred before a stream became ready.
  *      -EPERM:      Failure occurred, unable to select a stream.
  *  Requires:
- *      strm_init(void) called.
  *      strm_tab != NULL.
  *      strms > 0.
  *      pmask != NULL.
diff --git a/drivers/staging/tidspbridge/pmgr/dspapi.c b/drivers/staging/tidspbridge/pmgr/dspapi.c
index b1a99f76694..06e3b244f83 100644
--- a/drivers/staging/tidspbridge/pmgr/dspapi.c
+++ b/drivers/staging/tidspbridge/pmgr/dspapi.c
@@ -271,7 +271,6 @@ void api_exit(void)
                 chnl_exit();
                 msg_exit();
                 io_exit();
-                strm_exit();
                 mgr_exit();
                 rmm_exit();
         }
@@ -286,12 +285,11 @@ bool api_init(void)
 {
         bool ret = true;
         bool fdev, fchnl, fmsg, fio;
-        bool fmgr, fstrm, frmm;
+        bool fmgr, frmm;
 
         if (api_c_refs == 0) {
                 /* initialize driver and other modules */
                 fmgr = mgr_init();
-                fstrm = strm_init();
                 frmm = rmm_init();
                 fchnl = chnl_init();
                 fmsg = msg_mod_init();
@@ -304,9 +302,6 @@ bool api_init(void)
                         if (fmgr)
                                 mgr_exit();
 
-                        if (fstrm)
-                                strm_exit();
-
                         if (fchnl)
                                 chnl_exit();
 
diff --git a/drivers/staging/tidspbridge/rmgr/strm.c b/drivers/staging/tidspbridge/rmgr/strm.c
index bd684f16bae..34cc934e0c3 100644
--- a/drivers/staging/tidspbridge/rmgr/strm.c
+++ b/drivers/staging/tidspbridge/rmgr/strm.c
@@ -81,9 +81,6 @@ struct strm_object {
         struct cmm_xlatorobject *xlator;
 };
 
-/*  ----------------------------------- Globals */
-static u32 refs;                /* module reference count */
-
 /*  ----------------------------------- Function Prototypes */
 static int delete_strm(struct strm_object *stream_obj);
 
@@ -222,16 +219,6 @@ void strm_delete(struct strm_mgr *strm_mgr_obj)
 }
 
 /*
- *  ======== strm_exit ========
- *  Purpose:
- *      Discontinue usage of STRM module.
- */
-void strm_exit(void)
-{
-        refs--;
-}
-
-/*
  *  ======== strm_free_buffer ========
  *  Purpose:
  *      Frees the buffers allocated for a stream.
@@ -350,21 +337,6 @@ int strm_idle(struct strm_object *stream_obj, bool flush_data)
 }
 
 /*
- *  ======== strm_init ========
- *  Purpose:
- *      Initialize the STRM module.
- */
-bool strm_init(void)
-{
-        bool ret = true;
-
-        if (ret)
-                refs++;
-
-        return ret;
-}
-
-/*
  *  ======== strm_issue ========
  *  Purpose:
  *      Issues a buffer on a stream