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Subject[PATCH 1/2] device: Add dev_of_node() accessor
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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>
---

This is what we discussed back in November and I had forgotten
to finish :)

include/linux/device.h | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index fb50673..08128288 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -916,6 +916,13 @@ static inline void device_lock_assert(struct device *dev)
lockdep_assert_held(&dev->mutex);
}

+static inline struct device_node *dev_of_node(struct device *dev)
+{
+ if (!IS_ENABLED(CONFIG_OF))
+ return NULL;
+ return dev->of_node;
+}
+
void driver_init(void);

/*




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