of: handle NULL node in next_child iterators
authorFlorian Fainelli <f.fainelli@gmail.com>
Wed, 28 May 2014 17:39:02 +0000 (10:39 -0700)
committerRob Herring <robh@kernel.org>
Wed, 4 Jun 2014 09:46:01 +0000 (04:46 -0500)
commit43cb43678705e39b175b325f17938295996aefc7
tree0c238470709c70f60714245816e6437efb0cdef1
parent64c5c759084e153272eb05f4103de3e0adf5a88a
of: handle NULL node in next_child iterators

Add an early check for the node argument in __of_get_next_child and
of_get_next_available_child() to avoid dereferencing a NULL node pointer
a few lines after.

CC: Daniel Mack <zonque@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
drivers/of/base.c