diff options
| -rw-r--r-- | drivers/of/base.c | 18 | ||||
| -rw-r--r-- | include/linux/of.h | 15 |
2 files changed, 26 insertions, 7 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index f564e3107b3e..0ceb26a16050 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -594,27 +594,35 @@ const struct of_device_id *of_match_node(const struct of_device_id *matches, EXPORT_SYMBOL(of_match_node); /** - * of_find_matching_node - Find a node based on an of_device_id match - * table. + * of_find_matching_node_and_match - Find a node based on an of_device_id + * match table. * @from: The node to start searching from or NULL, the node * you pass will not be searched, only the next one * will; typically, you pass what the previous call * returned. of_node_put() will be called on it * @matches: array of of device match structures to search in + * @match Updated to point at the matches entry which matched * * Returns a node pointer with refcount incremented, use * of_node_put() on it when done. */ -struct device_node *of_find_matching_node(struct device_node *from, - const struct of_device_id *matches) +struct device_node *of_find_matching_node_and_match(struct device_node *from, + const struct of_device_id *matches, + const struct of_device_id **match) { struct device_node *np; + if (match) + *match = NULL; + read_lock(&devtree_lock); np = from ? from->allnext : allnodes; for (; np; np = np->allnext) { - if (of_match_node(matches, np) && of_node_get(np)) + if (of_match_node(matches, np) && of_node_get(np)) { + if (match) + *match = matches; break; + } } of_node_put(from); read_unlock(&devtree_lock); diff --git a/include/linux/of.h b/include/linux/of.h index ab1af0e14659..13e0aacb4d9f 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -179,11 +179,22 @@ extern struct device_node *of_find_compatible_node(struct device_node *from, #define for_each_compatible_node(dn, type, compatible) \ for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ dn = of_find_compatible_node(dn, type, compatible)) -extern struct device_node *of_find_matching_node(struct device_node *from, - const struct of_device_id *matches); +extern struct device_node *of_find_matching_node_and_match( + struct device_node *from, + const struct of_device_id *matches, + const struct of_device_id **match); +static inline struct device_node *of_find_matching_node( + struct device_node *from, + const struct of_device_id *matches) +{ + return of_find_matching_node_and_match(from, matches, NULL); +} #define for_each_matching_node(dn, matches) \ for (dn = of_find_matching_node(NULL, matches); dn; \ dn = of_find_matching_node(dn, matches)) +#define for_each_matching_node_and_match(dn, matches, match) \ + for (dn = of_find_matching_node_and_match(NULL, matches, match); \ + dn; dn = of_find_matching_node_and_match(dn, matches, match)) extern struct device_node *of_find_node_by_path(const char *path); extern struct device_node *of_find_node_by_phandle(phandle handle); extern struct device_node *of_get_parent(const struct device_node *node); |