Messages in this thread Patch in this message | | | From | Florian Fainelli <> | Subject | [PATCH] of: handle NULL node in of_get_next_available_child | Date | Fri, 23 May 2014 12:43:11 -0700 |
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Add an early check for the node argument in 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> --- drivers/of/base.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/of/base.c b/drivers/of/base.c index e67b308819c9..9a71bfac78ae 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -746,6 +746,9 @@ struct device_node *of_get_next_available_child(const struct device_node *node, struct device_node *next; unsigned long flags; + if (!node) + return NULL; + raw_spin_lock_irqsave(&devtree_lock, flags); next = prev ? prev->sibling : node->child; for (; next; next = next->sibling) { -- 1.9.1
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