Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index a41b07e..e05104f 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -482,11 +482,6 @@
}
EXPORT_SYMBOL_GPL(fpga_mgr_get);
-static int fpga_mgr_of_node_match(struct device *dev, const void *data)
-{
- return dev->of_node == data;
-}
-
/**
* of_fpga_mgr_get - Given a device node, get a reference to a fpga mgr.
*
@@ -498,8 +493,7 @@
{
struct device *dev;
- dev = class_find_device(fpga_mgr_class, NULL, node,
- fpga_mgr_of_node_match);
+ dev = class_find_device_by_of_node(fpga_mgr_class, node);
if (!dev)
return ERR_PTR(-ENODEV);
@@ -558,6 +552,9 @@
* @mops: pointer to structure of fpga manager ops
* @priv: fpga manager private data
*
+ * The caller of this function is responsible for freeing the struct with
+ * fpga_mgr_free(). Using devm_fpga_mgr_create() instead is recommended.
+ *
* Return: pointer to struct fpga_manager or NULL
*/
struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
@@ -618,8 +615,8 @@
EXPORT_SYMBOL_GPL(fpga_mgr_create);
/**
- * fpga_mgr_free - deallocate a FPGA manager
- * @mgr: fpga manager struct created by fpga_mgr_create
+ * fpga_mgr_free - free a FPGA manager created with fpga_mgr_create()
+ * @mgr: fpga manager struct
*/
void fpga_mgr_free(struct fpga_manager *mgr)
{
@@ -628,9 +625,55 @@
}
EXPORT_SYMBOL_GPL(fpga_mgr_free);
+static void devm_fpga_mgr_release(struct device *dev, void *res)
+{
+ struct fpga_manager *mgr = *(struct fpga_manager **)res;
+
+ fpga_mgr_free(mgr);
+}
+
+/**
+ * devm_fpga_mgr_create - create and initialize a managed FPGA manager struct
+ * @dev: fpga manager device from pdev
+ * @name: fpga manager name
+ * @mops: pointer to structure of fpga manager ops
+ * @priv: fpga manager private data
+ *
+ * This function is intended for use in a FPGA manager driver's probe function.
+ * After the manager driver creates the manager struct with
+ * devm_fpga_mgr_create(), it should register it with fpga_mgr_register(). The
+ * manager driver's remove function should call fpga_mgr_unregister(). The
+ * manager struct allocated with this function will be freed automatically on
+ * driver detach. This includes the case of a probe function returning error
+ * before calling fpga_mgr_register(), the struct will still get cleaned up.
+ *
+ * Return: pointer to struct fpga_manager or NULL
+ */
+struct fpga_manager *devm_fpga_mgr_create(struct device *dev, const char *name,
+ const struct fpga_manager_ops *mops,
+ void *priv)
+{
+ struct fpga_manager **ptr, *mgr;
+
+ ptr = devres_alloc(devm_fpga_mgr_release, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return NULL;
+
+ mgr = fpga_mgr_create(dev, name, mops, priv);
+ if (!mgr) {
+ devres_free(ptr);
+ } else {
+ *ptr = mgr;
+ devres_add(dev, ptr);
+ }
+
+ return mgr;
+}
+EXPORT_SYMBOL_GPL(devm_fpga_mgr_create);
+
/**
* fpga_mgr_register - register a FPGA manager
- * @mgr: fpga manager struct created by fpga_mgr_create
+ * @mgr: fpga manager struct
*
* Return: 0 on success, negative error code otherwise.
*/
@@ -661,8 +704,10 @@
EXPORT_SYMBOL_GPL(fpga_mgr_register);
/**
- * fpga_mgr_unregister - unregister and free a FPGA manager
- * @mgr: fpga manager struct
+ * fpga_mgr_unregister - unregister a FPGA manager
+ * @mgr: fpga manager struct
+ *
+ * This function is intended for use in a FPGA manager driver's remove function.
*/
void fpga_mgr_unregister(struct fpga_manager *mgr)
{
@@ -681,9 +726,6 @@
static void fpga_mgr_dev_release(struct device *dev)
{
- struct fpga_manager *mgr = to_fpga_manager(dev);
-
- fpga_mgr_free(mgr);
}
static int __init fpga_mgr_class_init(void)