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authorJoerg Roedel <jroedel@suse.de>2016-04-04 18:49:20 +0300
committerRob Herring <robh@kernel.org>2016-04-20 01:25:14 +0300
commitf623ce95a51baee6a6638f0b025efc0229a9ac0d (patch)
treea54f340319d4a3b5968263367da290c1a396b9f8 /include/linux/of.h
parent2021bd01ffccf2728a591070008d7de5bc41306a (diff)
downloadlinux-f623ce95a51baee6a6638f0b025efc0229a9ac0d.tar.xz
of: Introduce of_for_each_phandle() helper macro
With this macro any user can easily iterate over a list of phandles. The patch also converts __of_parse_phandle_with_args() to make use of the macro. The of_count_phandle_with_args() function is not converted, because the macro hides the return value of of_phandle_iterator_init(), which is needed in there. Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'include/linux/of.h')
-rw-r--r--include/linux/of.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h
index 1f5e108f6716..b0b80716fbfb 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -908,6 +908,12 @@ static inline int of_property_read_s32(const struct device_node *np,
return of_property_read_u32(np, propname, (u32*) out_value);
}
+#define of_for_each_phandle(it, err, np, ln, cn, cc) \
+ for (of_phandle_iterator_init((it), (np), (ln), (cn), (cc)), \
+ err = of_phandle_iterator_next(it); \
+ err == 0; \
+ err = of_phandle_iterator_next(it))
+
#define of_property_for_each_u32(np, propname, prop, p, u) \
for (prop = of_find_property(np, propname, NULL), \
p = of_prop_next_u32(prop, NULL, &u); \