linux-kernel - Re: [PATCH] [RESEND] gpu: ipu-v3: add DRM dependency

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Date:   Mon, 24 Jul 2017 10:05:45 +0200
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Daniel Vetter <daniel.vetter@...ll.ch>,
        Stephen Boyd <stephen.boyd@...aro.org>, robdclark@...il.com,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [RESEND] gpu: ipu-v3: add DRM dependency

Hi Arnd,

On Fri, 2017-07-21 at 22:56 +0200, Arnd Bergmann wrote:
> The new PRE/PRG driver code causes a link failure when DRM is disabled:
> 
> drivers/gpu/ipu-v3/ipu-pre.o: In function `ipu_pre_configure':
> ipu-pre.c:(.text.ipu_pre_configure+0x18): undefined reference to `drm_format_info'
> drivers/gpu/ipu-v3/ipu-prg.o: In function `ipu_prg_format_supported':
> ipu-prg.c:(.text.ipu_prg_format_supported+0x8): undefined reference to `drm_format_info'
> 
> Adding a Kconfig dependency on DRM means we don't run into this problem
> any more. This might not be the best solution though, as the ipu seems
> to have been intentionally kept separate from DRM in the past.
> 
> Fixes: ea9c260514c1 ("gpu: ipu-v3: add driver for Prefetch Resolve Gasket")
> Link: https://patchwork.kernel.org/patch/9636665/
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> Originally sent on March 21, but got no reply for it. Resending unchanged
> as it is still needed in v4.13-rc1

thank you for fix and for the resend. I have the original patch in my
inbox, I'm sorry I overlooked it.

I would still like to keep the ipu-v3 driver buildable without DRM
enabled. For now, I have applied your patch as is.

regards
Philipp