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of: document refcount incrementation of of_get_cpu_node()

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This function increments refcount.  This is worth noting.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Masahiro Yamada 2016-04-20 10:18:46 +09:00 • committed by Rob Herring
commit 1c986e3643
1 changed files with 2 additions and 1 deletions
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3
drivers/of/base.c
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@ -394,7 +394,8 @@ bool __weak arch_find_n_match_cpu_physical_id(struct device_node *cpun,
* before booting secondary cores. This function uses arch_match_cpu_phys_id
* which can be overridden by architecture specific implementation.
*
* Returns a node pointer for the logical cpu if found, else NULL.
* Returns a node pointer for the logical cpu with refcount incremented, use
* of_node_put() on it when done. Returns NULL if not found.
*/
struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
{