From a71aa396eec042606b9722745d4aa4159bde2e87 Mon Sep 17 00:00:00 2001
From: =?utf8?q?V=C3=ADctor=20Manuel=20J=C3=A1quez=20Leal?=
 <vjaquez@igalia.com>
Date: Fri, 9 Mar 2012 01:03:46 +0100
Subject: [PATCH] staging: tidspbridge: remove cmm_init() and cmm_exit()
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

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 <vjaquez@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 .../tidspbridge/include/dspbridge/cmm.h       | 30 -------------------
 drivers/staging/tidspbridge/pmgr/cmm.c        | 29 ------------------
 drivers/staging/tidspbridge/pmgr/dev.c        | 23 +++-----------
 3 files changed, 4 insertions(+), 78 deletions(-)

diff --git a/drivers/staging/tidspbridge/include/dspbridge/cmm.h b/drivers/staging/tidspbridge/include/dspbridge/cmm.h
index aff22051cf57..c66bcf7ea90c 100644
--- a/drivers/staging/tidspbridge/include/dspbridge/cmm.h
+++ b/drivers/staging/tidspbridge/include/dspbridge/cmm.h
@@ -79,7 +79,6 @@ extern void *cmm_calloc_buf(struct cmm_object *hcmm_mgr,
  *      -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:
@@ -110,20 +109,6 @@ extern int cmm_create(struct cmm_object **ph_cmm_mgr,
  */
 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 ========
  *  Purpose:
@@ -184,19 +169,6 @@ extern int cmm_get_handle(void *hprocessor,
 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 ========
  *  Purpose:
@@ -333,7 +305,6 @@ extern int cmm_xlator_free_buf(struct cmm_xlatorobject *xlator,
  *      0:        Success.
  *      -EFAULT:    Bad translator handle.
  *  Requires:
- *      (refs > 0)
  *      (paddr != NULL)
  *      (ul_size > 0)
  *  Ensures:
@@ -355,7 +326,6 @@ extern int cmm_xlator_info(struct cmm_xlatorobject *xlator,
  *  Returns:
  *     Valid address on success, else NULL.
  *  Requires:
- *      refs > 0
  *      paddr != NULL
  *      xtype >= CMM_VA2PA) && (xtype <= CMM_DSPPA2PA)
  *  Ensures:
diff --git a/drivers/staging/tidspbridge/pmgr/cmm.c b/drivers/staging/tidspbridge/pmgr/cmm.c
index 3366e601009d..4a800dadd703 100644
--- a/drivers/staging/tidspbridge/pmgr/cmm.c
+++ b/drivers/staging/tidspbridge/pmgr/cmm.c
@@ -131,9 +131,6 @@ struct cmm_mnode {
 	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);
@@ -316,17 +313,6 @@ int cmm_destroy(struct cmm_object *hcmm_mgr, bool force)
 	return status;
 }
 
-/*
- *  ======== cmm_exit ========
- *  Purpose:
- *      Discontinue usage of module; free resources when reference count
- *      reaches 0.
- */
-void cmm_exit(void)
-{
-	refs--;
-}
-
 /*
  *  ======== cmm_free_buf ========
  *  Purpose:
@@ -445,21 +431,6 @@ int cmm_get_info(struct cmm_object *hcmm_mgr,
 	return status;
 }
 
-/*
- *  ======== cmm_init ========
- *  Purpose:
- *      Initializes private state of CMM module.
- */
-bool cmm_init(void)
-{
-	bool ret = true;
-
-	if (ret)
-		refs++;
-
-	return ret;
-}
-
 /*
  *  ======== cmm_register_gppsm_seg ========
  *  Purpose:
diff --git a/drivers/staging/tidspbridge/pmgr/dev.c b/drivers/staging/tidspbridge/pmgr/dev.c
index 883765e3c851..734d47ed9a80 100644
--- a/drivers/staging/tidspbridge/pmgr/dev.c
+++ b/drivers/staging/tidspbridge/pmgr/dev.c
@@ -658,10 +658,8 @@ void dev_exit(void)
 {
 	refs--;
 
-	if (refs == 0) {
-		cmm_exit();
+	if (refs == 0)
 		dmm_exit();
-	}
 }
 
 /*
@@ -671,23 +669,10 @@ void dev_exit(void)
  */
 bool dev_init(void)
 {
-	bool cmm_ret, dmm_ret, 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();
+	bool ret = true;
 
-			if (dmm_ret)
-				dmm_exit();
-
-		}
-	}
+	if (refs == 0)
+		dmm_init();
 
 	if (ret)
 		refs++;
-- 
2.30.2