linux-kernel - Re: Failed to build on 4.2.6

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Message-ID: <87io47rj1w.fsf@osg.samsung.com>
Date:	Wed, 09 Dec 2015 10:51:55 +0000
From:	Luis de Bethencourt <luisbg@....samsung.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	stable <stable@...r.kernel.org>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-media@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Failed to build on 4.2.6


Greg Kroah-Hartman writes:

> On Mon, Dec 07, 2015 at 10:25:19AM -0500, Steven Rostedt wrote:
>> Hi,
>>
>> The attached config doesn't build on 4.2.6, but changing it to the
>> following:
>>
>>  VIDEO_V4L2_SUBDEV_API n -> y
>> +V4L2_FLASH_LED_CLASS n
>>
>> does build.
>
> Did this work on older kernels (4.2.5?  .4?  older?)
>
> thanks,
>
> greg k-h

Hi all,

The problem was:

drivers/media/i2c/adv7604.c: In function ‘adv76xx_get_format’:
drivers/media/i2c/adv7604.c:1861:3: error: implicit declaration of function ‘v4l2_subdev_get_try_format’ [-Werror=implicit-function-declaration]
   fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);

As Randy mentioned, this if fixed by commit
fc88dd16a0e430f57458e6bd9b62a631c6ea53a1

I backported it locally to test this and build worked fine.

Luis
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