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Subject: Re: Automatic device driver back-porting with media_build
To: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-media <linux-media@vger.kernel.org>,
	Hans Verkuil <hans.verkuil@cisco.com>
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From: Mason <slash.tmp@free.fr>
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Date: Fri, 18 Dec 2015 14:40:10 +0100
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On 18/12/2015 13:59, Mason wrote: [snip previous work-arounds]

Compilation completes.

make -C /tmp/sandbox/custom-linux-3.4 SUBDIRS=/tmp/sandbox/media_build/v4l  modules
make[2]: Entering directory `/tmp/sandbox/custom-linux-3.4'
  Building modules, stage 2.
  MODPOST 209 modules
WARNING: "of_graph_parse_endpoint" [/tmp/sandbox/media_build/v4l/videodev.ko] undefined!
WARNING: "of_get_next_parent" [/tmp/sandbox/media_build/v4l/videodev.ko] undefined!
WARNING: "nsecs_to_jiffies" [/tmp/sandbox/media_build/v4l/gpio-ir-recv.ko] undefined!
make[2]: Leaving directory `/tmp/sandbox/custom-linux-3.4'
./scripts/rmmod.pl check
found 209 modules
make[1]: Leaving directory `/tmp/sandbox/media_build/v4l'


A few link problems, two from device tree:

of_graph_parse_endpoint() commit fd9fdb78a9bf8

of_get_next_parent() was not exported until commit 6695be6863b75

nsecs_to_jiffies() was not exported until commit d560fed6abe0f

How would you fix those?

I will try building a kernel with CONFIG_OF=n

Regards.