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of: Move definition of of_find_next_cache_node into common code.

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Since the definition of_find_next_cache_node is architecture independent,
the existing definition in powerpc can be moved to driver/of/base.c

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Sudeep KarkadaNagesha
2013-09-18 11:53:05 +01:00
committed by Benjamin Herrenschmidt
parent afaf539854
commit a3e31b4588
4 changed files with 33 additions and 34 deletions
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31
drivers/of/base.c
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@@ -1884,3 +1884,34 @@ int of_device_is_stdout_path(struct device_node *dn)
return of_stdout == dn;
}
EXPORT_SYMBOL_GPL(of_device_is_stdout_path);
/**
* of_find_next_cache_node - Find a node's subsidiary cache
* @np: node of type "cpu" or "cache"
*
* Returns a node pointer with refcount incremented, use
* of_node_put() on it when done. Caller should hold a reference
* to np.
*/
struct device_node *of_find_next_cache_node(const struct device_node *np)
{
struct device_node *child;
const phandle *handle;
handle = of_get_property(np, "l2-cache", NULL);
if (!handle)
handle = of_get_property(np, "next-level-cache", NULL);
if (handle)
return of_find_node_by_phandle(be32_to_cpup(handle));
/* OF on pmac has nodes instead of properties named "l2-cache"
* beneath CPU nodes.
*/
if (!strcmp(np->type, "cpu"))
for_each_child_of_node(np, child)
if (!strcmp(child->type, "cache"))
return child;
return NULL;
}