staging: tidspbridge - remove reserved memory clean up

Now iommv module keeps track of iommu memory used,
we do not need resource cleanup for reserved
memories anymore.

Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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

@@ -165,10 +165,6 @@ struct process_context {
 	struct list_head dmm_map_list;
 	spinlock_t dmm_map_lock;
 
-	/* DMM reserved memory resources */
-	struct list_head dmm_rsv_list;
-	spinlock_t dmm_rsv_lock;
-
 	/* DSP Heap resources */
 	struct dspheap_res_object *pdspheap_list;
 

drivers/staging/tidspbridge/rmgr/drv.c

@@ -146,7 +146,6 @@ int drv_remove_all_dmm_res_elements(void *process_ctxt)
 	struct process_context *ctxt = (struct process_context *)process_ctxt;
 	int status = 0;
 	struct dmm_map_object *temp_map, *map_obj;
-	struct dmm_rsv_object *temp_rsv, *rsv_obj;
 
 	/* Free DMM mapped memory resources */
 	list_for_each_entry_safe(map_obj, temp_map, &ctxt->dmm_map_list, link) {
@@ -156,16 +155,6 @@ int drv_remove_all_dmm_res_elements(void *process_ctxt)
 			pr_err("%s: proc_un_map failed!"
 			       " status = 0x%xn", __func__, status);
 	}
-
-	/* Free DMM reserved memory resources */
-	list_for_each_entry_safe(rsv_obj, temp_rsv, &ctxt->dmm_rsv_list, link) {
-		status = proc_un_reserve_memory(ctxt->hprocessor, (void *)
-						rsv_obj->dsp_reserved_addr,
-						ctxt);
-		if (status)
-			pr_err("%s: proc_un_reserve_memory failed!"
-			       " status = 0x%xn", __func__, status);
-	}
 	return status;
 }
 

drivers/staging/tidspbridge/rmgr/drv_interface.c

@@ -509,8 +509,6 @@ static int bridge_open(struct inode *ip, struct file *filp)
 		pr_ctxt->res_state = PROC_RES_ALLOCATED;
 		spin_lock_init(&pr_ctxt->dmm_map_lock);
 		INIT_LIST_HEAD(&pr_ctxt->dmm_map_list);
-		spin_lock_init(&pr_ctxt->dmm_rsv_lock);
-		INIT_LIST_HEAD(&pr_ctxt->dmm_rsv_list);
 
 		pr_ctxt->node_id = kzalloc(sizeof(struct idr), GFP_KERNEL);
 		if (pr_ctxt->node_id) {

drivers/staging/tidspbridge/rmgr/proc.c

@@ -1515,7 +1515,6 @@ int proc_reserve_memory(void *hprocessor, u32 ul_size,
 	struct dmm_object *dmm_mgr;
 	int status = 0;
 	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
-	struct dmm_rsv_object *rsv_obj;
 
 	if (!p_proc_object) {
 		status = -EFAULT;
@@ -1529,22 +1528,6 @@ int proc_reserve_memory(void *hprocessor, u32 ul_size,
 	}
 
 	status = dmm_reserve_memory(dmm_mgr, ul_size, (u32 *) pp_rsv_addr);
-	if (status != 0)
-		goto func_end;
-
-	/*
-	 * A successful reserve should be followed by insertion of rsv_obj
-	 * into dmm_rsv_list, so that reserved memory resource tracking
-	 * remains uptodate
-	 */
-	rsv_obj = kmalloc(sizeof(struct dmm_rsv_object), GFP_KERNEL);
-	if (rsv_obj) {
-		rsv_obj->dsp_reserved_addr = (u32) *pp_rsv_addr;
-		spin_lock(&pr_ctxt->dmm_rsv_lock);
-		list_add(&rsv_obj->link, &pr_ctxt->dmm_rsv_list);
-		spin_unlock(&pr_ctxt->dmm_rsv_lock);
-	}
-
 func_end:
 	dev_dbg(bridge, "%s: hprocessor: 0x%p ul_size: 0x%x pp_rsv_addr: 0x%p "
 		"status 0x%x\n", __func__, hprocessor,
@@ -1756,7 +1739,6 @@ int proc_un_reserve_memory(void *hprocessor, void *prsv_addr,
 	struct dmm_object *dmm_mgr;
 	int status = 0;
 	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
-	struct dmm_rsv_object *rsv_obj;
 
 	if (!p_proc_object) {
 		status = -EFAULT;
@@ -1770,24 +1752,6 @@ int proc_un_reserve_memory(void *hprocessor, void *prsv_addr,
 	}
 
 	status = dmm_un_reserve_memory(dmm_mgr, (u32) prsv_addr);
-	if (status != 0)
-		goto func_end;
-
-	/*
-	 * A successful unreserve should be followed by removal of rsv_obj
-	 * from dmm_rsv_list, so that reserved memory resource tracking
-	 * remains uptodate
-	 */
-	spin_lock(&pr_ctxt->dmm_rsv_lock);
-	list_for_each_entry(rsv_obj, &pr_ctxt->dmm_rsv_list, link) {
-		if (rsv_obj->dsp_reserved_addr == (u32) prsv_addr) {
-			list_del(&rsv_obj->link);
-			kfree(rsv_obj);
-			break;
-		}
-	}
-	spin_unlock(&pr_ctxt->dmm_rsv_lock);
-
 func_end:
 	dev_dbg(bridge, "%s: hprocessor: 0x%p prsv_addr: 0x%p status: 0x%x\n",
 		__func__, hprocessor, prsv_addr, status);