From: Benjamin Herrenschmidt Subject: [PATCH 1/2] device: Add dev_of_node() accessor Date: Mon, 16 Feb 2015 14:59:08 +1100 Message-ID: <1424059148.21410.37.camel@kernel.crashing.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Rob Herring Cc: Grant Likely , Olof Johansson , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Arnd Bergmann List-Id: devicetree@vger.kernel.org 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 --- 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); /* -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html