From 5819643946efc52bd2ae0034c8122e28d32b8a74 Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Sun, 3 Mar 2013 20:12:31 -0300
Subject: [PATCH] --- yaml --- r: 366760 b: refs/heads/master c:
 2180f92def1921397f422f278b3cc65751b749cc h: refs/heads/master v: v3

---
 [refs]                            |  2 +-
 trunk/include/media/v4l2-device.h | 13 +++++++++++++
 trunk/include/media/v4l2-subdev.h |  3 +++
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index f150264e4423..dbdf22c8350c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6cd247ef22e493e1884e576c066661538b031981
+refs/heads/master: 2180f92def1921397f422f278b3cc65751b749cc
diff --git a/trunk/include/media/v4l2-device.h b/trunk/include/media/v4l2-device.h
index d61febfb1668..c9b1593923f6 100644
--- a/trunk/include/media/v4l2-device.h
+++ b/trunk/include/media/v4l2-device.h
@@ -190,4 +190,17 @@ v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev);
 			##args);					\
 })
 
+#define v4l2_device_has_op(v4l2_dev, o, f)				\
+({									\
+	struct v4l2_subdev *__sd;					\
+	bool __result = false;						\
+	list_for_each_entry(__sd, &(v4l2_dev)->subdevs, list) {		\
+		if (v4l2_subdev_has_op(__sd, o, f)) {			\
+			__result = true;				\
+			break;						\
+		}							\
+	}								\
+	__result;							\
+})
+
 #endif
diff --git a/trunk/include/media/v4l2-subdev.h b/trunk/include/media/v4l2-subdev.h
index 8158a0810fdc..c42703a37602 100644
--- a/trunk/include/media/v4l2-subdev.h
+++ b/trunk/include/media/v4l2-subdev.h
@@ -687,4 +687,7 @@ void v4l2_subdev_init(struct v4l2_subdev *sd,
 	((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \
 	 (sd)->v4l2_dev->notify((sd), (notification), (arg)))
 
+#define v4l2_subdev_has_op(sd, o, f) \
+	((sd)->ops->o && (sd)->ops->o->f)
+
 #endif