device: Add dev_of_node() accessor
Suggested by Arnd Bergmann, this gives a practical accessor for the of_node field of struct device while instructing the compiler that it will be NULL if CONFIG_OF is not set. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -916,6 +916,13 @@ static inline void device_lock_assert(struct device *dev)
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lockdep_assert_held(&dev->mutex);
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}
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static inline struct device_node *dev_of_node(struct device *dev)
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{
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if (!IS_ENABLED(CONFIG_OF))
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return NULL;
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return dev->of_node;
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}
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void driver_init(void);
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/*
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