On Tue, Sep 24, 2013 at 2:16 PM, Rob Herring <robherring2@xxxxxxxxx> wrote: > On 09/24/2013 12:50 PM, Bryan Wu wrote: >> Some drivers keep counting available child by themselves. So >> introduce a new simple API like of_get_child_count() but for >> available childs. >> >> Cc: Josh Wu <josh.wu@xxxxxxxxx> >> Signed-off-by: Bryan Wu <cooloney@xxxxxxxxx> >> --- > > Acked-by: Rob Herring <rob.herring@xxxxxxxxxxx> > > I assume you have some user and will take this dependency thru that tree? > Exactly, a patch from Josh [1] inspired me to create this API. Thanks, -Bryan [1]: https://lkml.org/lkml/2013/9/24/68 >> include/linux/of.h | 16 ++++++++++++++++ >> 1 file changed, 16 insertions(+) >> >> diff --git a/include/linux/of.h b/include/linux/of.h >> index f95aee3..54c2560 100644 >> --- a/include/linux/of.h >> +++ b/include/linux/of.h >> @@ -226,6 +226,17 @@ static inline int of_get_child_count(const struct device_node *np) >> return num; >> } >> >> +static inline int of_get_available_child_count(const struct device_node *np) >> +{ >> + struct device_node *child; >> + int num = 0; >> + >> + for_each_available_child_of_node(np, child) >> + num++; >> + >> + return num; >> +} >> + >> extern struct device_node *of_find_node_with_property( >> struct device_node *from, const char *prop_name); >> #define for_each_node_with_property(dn, prop_name) \ >> @@ -376,6 +387,11 @@ static inline int of_get_child_count(const struct device_node *np) >> return 0; >> } >> >> +static inline int of_get_available_child_count(const struct device_node *np) >> +{ >> + return 0; >> +} >> + >> static inline int of_device_is_compatible(const struct device_node *device, >> const char *name) >> { >> > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
