software node: replace is_array with is_inline

We do not need a special flag to know if we are dealing with an
array, as we can get that data from ratio between element length and
the data size, but we do need a flag to know whether or not the data
is stored directly inside property_entry.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[ rjw: Subject & changelog, struct property_entry kerneldoc ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/swnode.c

@@ -108,10 +108,7 @@ static const void *property_get_pointer(const struct property_entry *prop)
 	if (!prop->length)
 		return NULL;
 
-	if (prop->is_array)
-		return prop->pointer;
-
-	return &prop->value;
+	return prop->is_inline ? &prop->value : prop->pointer;
 }
 
 static const void *property_entry_find(const struct property_entry *props,
@@ -205,7 +202,7 @@ static void property_entry_free_data(const struct property_entry *p)
 	const char * const *src_str;
 	size_t i, nval;
 
-	if (p->is_array) {
+	if (!p->is_inline) {
 		if (p->type == DEV_PROP_STRING && p->pointer) {
 			src_str = p->pointer;
 			nval = p->length / sizeof(const char *);
@@ -250,7 +247,7 @@ static int property_entry_copy_data(struct property_entry *dst,
 	const void *pointer = property_get_pointer(src);
 	const void *new;
 
-	if (src->is_array) {
+	if (!src->is_inline) {
 		if (!src->length)
 			return -ENODATA;
 
@@ -264,15 +261,16 @@ static int property_entry_copy_data(struct property_entry *dst,
 				return -ENOMEM;
 		}
 
-		dst->is_array = true;
 		dst->pointer = new;
 	} else if (src->type == DEV_PROP_STRING) {
 		new = kstrdup(src->value.str, GFP_KERNEL);
 		if (!new && src->value.str)
 			return -ENOMEM;
 
+		dst->is_inline = true;
 		dst->value.str = new;
 	} else {
+		dst->is_inline = true;
 		dst->value = src->value;
 	}
 

include/linux/property.h

@@ -227,15 +227,15 @@ static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode,
  * struct property_entry - "Built-in" device property representation.
  * @name: Name of the property.
  * @length: Length of data making up the value.
- * @is_array: True when the property is an array.
+ * @is_inline: True when the property value is stored inline.
  * @type: Type of the data in unions.
- * @pointer: Pointer to the property (an array of items of the given type).
- * @value: Value of the property (when it is a single item of the given type).
+ * @pointer: Pointer to the property when it is not stored inline.
+ * @value: Value of the property when it is stored inline.
  */
 struct property_entry {
 	const char *name;
 	size_t length;
-	bool is_array;
+	bool is_inline;
 	enum dev_prop_type type;
 	union {
 		const void *pointer;
@@ -262,7 +262,6 @@ struct property_entry {
 (struct property_entry) {						\
 	.name = _name_,							\
 	.length = (_len_) * __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_),	\
-	.is_array = true,						\
 	.type = DEV_PROP_##_Type_,					\
 	{ .pointer = _val_ },						\
 }
@@ -293,6 +292,7 @@ struct property_entry {
 (struct property_entry) {						\
 	.name = _name_,							\
 	.length = __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_),		\
+	.is_inline = true,						\
 	.type = DEV_PROP_##_Type_,					\
 	{ .value = { ._elem_ = _val_ } },				\
 }
@@ -311,6 +311,7 @@ struct property_entry {
 #define PROPERTY_ENTRY_BOOL(_name_)		\
 (struct property_entry) {			\
 	.name = _name_,				\
+	.is_inline = true,			\
 }
 
 struct property_entry *