Messages in this thread | | | From | Grant Likely <> | Subject | Re: [PATCHv5 1/9] of: introduce of_property_for_earch_phandle_with_args() | Date | Thu, 21 Nov 2013 12:43:28 +0000 |
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On Tue, 19 Nov 2013 11:33:05 +0200, Hiroshi Doyu <hdoyu@nvidia.com> wrote: > The following pattern of code is tempting: > > for (i = 0; !of_parse_phandle_with_args(np, list, cells, i, args); i++) > > Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
That's a very minimal commit message. Can you elaborate please.
> --- > v5: > New patch for v5. > --- > include/linux/of.h | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/include/linux/of.h b/include/linux/of.h > index 276c546..131fef5 100644 > --- a/include/linux/of.h > +++ b/include/linux/of.h > @@ -613,6 +613,9 @@ static inline int of_property_read_u32(const struct device_node *np, > s; \ > s = of_prop_next_string(prop, s)) > > +#define of_property_for_each_phandle_with_args(np, list, cells, i, args) \ > + for (i = 0; !of_parse_phandle_with_args(np, list, cells, i, args); i++) > +
That works, but pretty darn inefficient. We need an iterator version of of_parse_phandle_with_args() to loop over all the entries.
> #if defined(CONFIG_PROC_FS) && defined(CONFIG_PROC_DEVICETREE) > extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *); > extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop); > -- > 1.8.1.5 >
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