staging: unisys: visorutil: Use kzalloc instead of kmalloc with memset

Fix coccinelle warnings of better allocation by using kzalloc.
In these cases, kzalloc is preferred, as kmalloc may fail if it does not find
contiguous memory.

Signed-off-by: Iulia Manda <iulia.manda21@gmail.com>
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>

drivers/staging/unisys/visorutil/procobjecttree.c

@@ -140,10 +140,9 @@ MYPROCTYPE *visor_proc_CreateType(struct proc_dir_entry *procDirRoot,
 		FAIL("procDirRoot cannot be NULL!", 0);
 	if (name == NULL || name[0] == NULL)
 		FAIL("name must contain at least 1 node name!", 0);
-	type = kmalloc(sizeof(MYPROCTYPE), GFP_KERNEL|__GFP_NORETRY);
+	type = kzalloc(sizeof(MYPROCTYPE), GFP_KERNEL | __GFP_NORETRY);
 	if (type == NULL)
 		FAIL("out of memory", 0);
-	memset(type, 0, sizeof(MYPROCTYPE));
 	type->name = name;
 	type->propertyNames = propertyNames;
 	type->nProperties = 0;
@@ -155,13 +154,11 @@ MYPROCTYPE *visor_proc_CreateType(struct proc_dir_entry *procDirRoot,
 			type->nProperties++;
 	while (type->name[type->nNames] != NULL)
 		type->nNames++;
-	type->procDirs = kmalloc((type->nNames+1)*
+	type->procDirs = kzalloc((type->nNames + 1) *
 				 sizeof(struct proc_dir_entry *),
-				 GFP_KERNEL|__GFP_NORETRY);
+				 GFP_KERNEL | __GFP_NORETRY);
 	if (type->procDirs == NULL)
 		FAIL("out of memory", 0);
-	memset(type->procDirs, 0, (type->nNames + 1) *
-	       sizeof(struct proc_dir_entry *));
 	parent = procDirRoot;
 	for (i = 0; i < type->nNames; i++) {
 		type->procDirs[i] = createProcDir(type->name[i], parent);
@@ -218,10 +215,9 @@ MYPROCOBJECT *visor_proc_CreateObject(MYPROCTYPE *type,
 
 	if (type == NULL)
 		FAIL("type cannot be NULL", 0);
-	obj = kmalloc(sizeof(MYPROCOBJECT), GFP_KERNEL | __GFP_NORETRY);
+	obj = kzalloc(sizeof(MYPROCOBJECT), GFP_KERNEL | __GFP_NORETRY);
 	if (obj == NULL)
 		FAIL("out of memory", 0);
-	memset(obj, 0, sizeof(MYPROCOBJECT));
 	obj->type = type;
 	obj->context = context;
 	if (name == NULL) {
@@ -240,19 +236,15 @@ MYPROCOBJECT *visor_proc_CreateObject(MYPROCTYPE *type,
 			RETPTR(NULL);
 	}
 	obj->procDirPropertyContexts =
-		kmalloc((type->nProperties+1)*sizeof(PROCDIRENTRYCONTEXT),
-			GFP_KERNEL|__GFP_NORETRY);
+		kzalloc((type->nProperties + 1) * sizeof(PROCDIRENTRYCONTEXT),
+			GFP_KERNEL | __GFP_NORETRY);
 	if (obj->procDirPropertyContexts == NULL)
 		FAIL("out of memory", 0);
-	memset(obj->procDirPropertyContexts, 0,
-	       (type->nProperties+1)*sizeof(PROCDIRENTRYCONTEXT));
 	obj->procDirProperties =
-		kmalloc((type->nProperties+1) * sizeof(struct proc_dir_entry *),
-			GFP_KERNEL|__GFP_NORETRY);
+		kzalloc((type->nProperties + 1) * sizeof(struct proc_dir_entry *),
+			GFP_KERNEL | __GFP_NORETRY);
 	if (obj->procDirProperties == NULL)
 		FAIL("out of memory", 0);
-	memset(obj->procDirProperties, 0,
-	       (type->nProperties+1) * sizeof(struct proc_dir_entry *));
 	for (i = 0; i < type->nProperties; i++) {
 		obj->procDirPropertyContexts[i].procObject = obj;
 		obj->procDirPropertyContexts[i].propertyIndex = i;