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device property: Make fwnode_handle_get() return the fwnode

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The fwnode_handle_get() function is used to obtain a reference to an
fwnode. A common usage pattern for the OF equivalent of the function is:

	mynode = of_node_get(node);

Similarly make fwnode_handle_get() return the fwnode to which the
reference was obtained.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sakari Ailus 2017-09-19 12:39:11 +03:00 committed by Rafael J. Wysocki
parent 39dae59d66
commit cf89a31ca5
4 changed files with 11 additions and 6 deletions
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9
drivers/base/property.c
View file

@ -1044,10 +1044,15 @@ EXPORT_SYMBOL_GPL(device_get_named_child_node);
/**
* fwnode_handle_get - Obtain a reference to a device node
* @fwnode: Pointer to the device node to obtain the reference to.
*
* Returns the fwnode handle.
*/
void fwnode_handle_get(struct fwnode_handle *fwnode)
struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode)
{
fwnode_call_void_op(fwnode, get);
if (!fwnode_has_op(fwnode, get))
return fwnode;
return fwnode_call_ptr_op(fwnode, get);
}
EXPORT_SYMBOL_GPL(fwnode_handle_get);

4
drivers/of/property.c
View file

@ -817,9 +817,9 @@ struct device_node *of_graph_get_remote_node(const struct device_node *node,
}
EXPORT_SYMBOL(of_graph_get_remote_node);
static void of_fwnode_get(struct fwnode_handle *fwnode)
static struct fwnode_handle *of_fwnode_get(struct fwnode_handle *fwnode)
{
of_node_get(to_of_node(fwnode));
return of_fwnode_handle(of_node_get(to_of_node(fwnode)));
}
static void of_fwnode_put(struct fwnode_handle *fwnode)

2
include/linux/fwnode.h
View file

@ -68,7 +68,7 @@ struct fwnode_reference_args {
* @graph_parse_endpoint: Parse endpoint for port and endpoint id.
*/
struct fwnode_operations {
void (*get)(struct fwnode_handle *fwnode);
struct fwnode_handle *(*get)(struct fwnode_handle *fwnode);
void (*put)(struct fwnode_handle *fwnode);
bool (*device_is_available)(const struct fwnode_handle *fwnode);
bool (*property_present)(const struct fwnode_handle *fwnode,

2
include/linux/property.h
View file

@ -100,7 +100,7 @@ struct fwnode_handle *fwnode_get_named_child_node(
struct fwnode_handle *device_get_named_child_node(struct device *dev,
const char *childname);
void fwnode_handle_get(struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
void fwnode_handle_put(struct fwnode_handle *fwnode);
unsigned int device_get_child_node_count(struct device *dev);