of: fix sparse warnings in of_find_next_cache_node

sparse gives a warning that 'handle' is not a __be32:

../drivers/of/base.c:2261:61: warning: incorrect type in argument 1 (different base types)
../drivers/of/base.c:2261:61:    expected restricted __be32 const [usertype] *p
../drivers/of/base.c:2261:61:    got unsigned int const [usertype] *[assigned] handle

We could just change the type, but the code can be improved by using
of_parse_phandle instead of open coding it with of_get_property and
of_find_node_by_phandle.

Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/drivers/of/base.c b/drivers/of/base.c
index d7c4629..016f9d7 100644 (file)
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -2250,15 +2250,14 @@ EXPORT_SYMBOL_GPL(of_console_check);
  */
 struct device_node *of_find_next_cache_node(const struct device_node *np)
 {
-       struct device_node *child;
-       const phandle *handle;
+       struct device_node *child, *cache_node;
 
-       handle = of_get_property(np, "l2-cache", NULL);
-       if (!handle)
-               handle = of_get_property(np, "next-level-cache", NULL);
+       cache_node = of_parse_phandle(np, "l2-cache", 0);
+       if (!cache_node)
+               cache_node = of_parse_phandle(np, "next-level-cache", 0);
 
-       if (handle)
-               return of_find_node_by_phandle(be32_to_cpup(handle));
+       if (cache_node)
+               return cache_node;
 
        /* OF on pmac has nodes instead of properties named "l2-cache"
         * beneath CPU nodes.