linux-kernel - Re: [PATCH -next] drm/panel: Fix build error when CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY

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Date:   Tue, 24 May 2022 10:27:32 +0800
From:   "gaochao (L)" <gaochao49@...wei.com>
To:     Doug Anderson <dianders@...omium.org>
CC:     Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sean Paul <seanpaul@...omium.org>, <zhengbin13@...wei.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] drm/panel: Fix build error when
 CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY_HELPER=m



在 2022/5/24 0:47, Doug Anderson 写道:
> Hi,
> 
> On Mon, May 23, 2022 at 1:58 AM gaochao <gaochao49@...wei.com> wrote:
>>
>> If CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY_HELPER=m,
>> bulding fails:
>>
>> drivers/gpu/drm/panel/panel-samsung-atna33xc20.o: In function `atana33xc20_probe':
>> panel-samsung-atna33xc20.c:(.text+0x744): undefined reference to
>>  `drm_panel_dp_aux_backlight'
>> make: *** [vmlinux] Error 1
>>
>> Let CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20 select DRM_DISPLAY_DP_HELPER and
>> CONFIG_DRM_DISPLAY_HELPER to fix this error.
>>
>> Fixes: 32ce3b320343 ("drm/panel: atna33xc20: Introduce the Samsung ATNA33XC20 panel")
>> Reported-by: Hulk Robot <hulkci@...wei.com>
>> Signed-off-by: gaochao <gaochao49@...wei.com>
> 
> I think the author / Signed-off-by are supposed to be real names. Is
> "gaochao" your legal name?
Thank you for the review.
Should be "Gao Chao", fixing in the second version.
> 
>> ---
>>  drivers/gpu/drm/panel/Kconfig | 2 ++
>>  1 file changed, 2 insertions(+)
> 
> Other than the Signed-off-by / Author issue:
> 
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
> .