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Relying on an unchecked of_iomap() which can return NULL is problematic here, an explicit check seems mandatory. Also the call to of_find_compatible_node() returns a device node with refcount incremented therefor an explicit of_node_put() is needed here. Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Fixes: commit 22bae4290457 ("ARM: hi3xxx: add hotplug support") Signed-off-by: Wei Xu <xuwei5@hisilicon.com>