linux-kernel - [PATCH] media: v4l2-fh: define v4l2_fh struct regardless of condition

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Message-ID: <000601d600bb$0e2d4320$2a87c960$@samsung.com>
Date:   Mon, 23 Mar 2020 11:30:45 +0900
From:   "Seungchul Kim" <sc377.kim@...sung.com>
To:     <mchehab@...nel.org>
Cc:     <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <sc377.kim@...sung.com>
Subject: [PATCH] media: v4l2-fh: define v4l2_fh struct regardless of
 condition

v4l2_fh struct define differently by CONFIG_V4L2_MEM2MEM_DEV.
If some vendors use CONFIG_V4L2_MEM2MEM_DEV by module, it can make the
mismatch of v4l2_fh sturct.

By the mismatch, the following error occurs.
===============================
[    7.533506] v4l2_mem2mem: disagrees about version of symbol video_devdata
[    7.533594] v4l2_mem2mem: Unknown symbol video_devdata (err -22)
[    7.535319] v4l2_mem2mem: disagrees about version of symbol
v4l2_event_pending
[    7.542532] v4l2_mem2mem: Unknown symbol v4l2_event_pending (err -22)
===============================

So v4l2_fh struct is modified to does not have dependency for
CONFIG_V4L2_MEM2MEM_DEV.

Signed-off-by: Seungchul Kim <sc377.kim@...sung.com>
---
 include/media/v4l2-fh.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/include/media/v4l2-fh.h b/include/media/v4l2-fh.h index
53b4dbb..b5b3e00 100644
--- a/include/media/v4l2-fh.h
+++ b/include/media/v4l2-fh.h
@@ -53,9 +53,7 @@ struct v4l2_fh {
 	unsigned int		navailable;
 	u32			sequence;

-#if IS_ENABLED(CONFIG_V4L2_MEM2MEM_DEV)
 	struct v4l2_m2m_ctx	*m2m_ctx;
-#endif
 };

 /**
--
2.7.4