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device property: Add a macro for interating over graph endpoints 

Add a convenience macro for iterating over graph endpoints. Iterating over
graph endpoints using fwnode_graph_get_next_endpoint() is a recurring
pattern, and this macro allows calling that function in a slightly more
convenient way. For instance,

	for (child = NULL;
	     (child = fwnode_graph_get_next_endpoint(fwnode, child)); )

becomes

	fwnode_graph_for_each_endpoint(fwnode, child)

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Sakari Ailus 2017-09-19 12:39:12 +03:00 committed by Rafael J. Wysocki
parent cf89a31ca5
commit 5e4b1b707b
1 changed files with 4 additions and 0 deletions
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4
include/linux/property.h
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@ -293,6 +293,10 @@ struct fwnode_handle *
fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
u32 endpoint);
#define fwnode_graph_for_each_endpoint(fwnode, child) \
for (child = NULL; \
(child = fwnode_graph_get_next_endpoint(fwnode, child)); )
int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
struct fwnode_endpoint *endpoint);