linux-kernel - [PATCHv2] ISP:BUILD:FIX: Move media_entity

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Date:	Fri, 19 Aug 2011 19:18:45 +0530
From:	Deepthy Ravi <deepthy.ravi@...com>
To:	<mchehab@...radead.org>, <linux-media@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC:	<linux-omap@...r.kernel.org>, Vaibhav Hiremath <hvaibhav@...com>,
	Deepthy Ravi <deepthy.ravi@...com>
Subject: [PATCHv2] ISP:BUILD:FIX: Move media_entity_init() and

From: Vaibhav Hiremath <hvaibhav@...com>

Fix the build break caused when CONFIG_MEDIA_CONTROLLER
option is disabled and if any sensor driver has to be used
between MC and non MC framework compatible devices.

For example,if tvp514x video decoder driver migrated to
MC framework is being built without CONFIG_MEDIA_CONTROLLER
option enabled, the following error messages will result.
drivers/built-in.o: In function `tvp514x_remove':
drivers/media/video/tvp514x.c:1285: undefined reference to
`media_entity_cleanup'
drivers/built-in.o: In function `tvp514x_probe':
drivers/media/video/tvp514x.c:1237: undefined reference to
`media_entity_init'

The file containing definitions of media_entity_init and
media_entity_cleanup functions will not be built if that
config option is disabled. And this is corrected by
defining two dummy functions.

Signed-off-by: Vaibhav Hiremath <hvaibhav@...com>
Signed-off-by: Deepthy Ravi <deepthy.ravi@...com>
---
 include/media/media-entity.h |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index cd8bca6..c90916e 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -121,9 +121,18 @@ struct media_entity_graph {
 	int top;
 };

+#ifdef CONFIG_MEDIA_CONTROLLER
 int media_entity_init(struct media_entity *entity, u16 num_pads,
 		struct media_pad *pads, u16 extra_links);
 void media_entity_cleanup(struct media_entity *entity);
+#else
+static inline int media_entity_init(struct media_entity *entity, u16 num_pads,
+		struct media_pad *pads, u16 extra_links)
+{
+	return 0;
+}
+static inline void media_entity_cleanup(struct media_entity *entity) {}
+#endif

 int media_entity_create_link(struct media_entity *source, u16 source_pad,
 		struct media_entity *sink, u16 sink_pad, u32 flags);
-- 
1.7.0.4

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