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Message-ID: <20200325085936.GA3072245@kroah.com>
Date: Wed, 25 Mar 2020 09:59:36 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Seungchul Kim <sc377.kim@...sung.com>
Cc: mchehab@...nel.org, linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: v4l2-fh: define v4l2_fh struct regardless of
condition
On Mon, Mar 23, 2020 at 11:30:45AM +0900, Seungchul Kim wrote:
> 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(-)
Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
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