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Message-ID: <d4e879e7-9347-cf20-e741-c92552ec1a5f@baylibre.com>
Date:   Tue, 30 Jul 2019 14:41:27 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     YueHaibing <yuehaibing@...wei.com>, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net, airlied@...ux.ie, daniel@...ll.ch,
        eric@...olt.net
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v2] drm/bridge: lvds-encoder: Fix build error while
 CONFIG_DRM_KMS_HELPER=m

On 29/07/2019 09:12, YueHaibing wrote:
> If DRM_LVDS_ENCODER=y but CONFIG_DRM_KMS_HELPER=m,
> build fails:
> 
> drivers/gpu/drm/bridge/lvds-encoder.o: In function `lvds_encoder_probe':
> lvds-encoder.c:(.text+0x155): undefined reference to `devm_drm_panel_bridge_add'
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Fixes: dbb58bfd9ae6 ("drm/bridge: Fix lvds-encoder since the panel_bridge rework.")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
> v2: remove tc358764 log in commit log, also fix Fixes tag
> ---
>  drivers/gpu/drm/bridge/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index a6eec90..77e4b95 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -48,6 +48,7 @@ config DRM_DUMB_VGA_DAC
>  config DRM_LVDS_ENCODER
>  	tristate "Transparent parallel to LVDS encoder support"
>  	depends on OF
> +	select DRM_KMS_HELPER
>  	select DRM_PANEL_BRIDGE
>  	help
>  	  Support for transparent parallel to LVDS encoders that don't require
> 

Reviewed-by: Neil Armstrong <narmstrong@...libre.com>

Applying to drm-misc-fixes

Neil

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