linux-kernel - Re: [PATCH] drm/mediatek: select DRM_GEM_DMA_HELPER if DRM_FBDEV

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Date: Thu, 20 Jun 2024 22:20:07 +0800
From: Chun-Kuang Hu <chunkuang.hu@...nel.org>
To: Chen-Yu Tsai <wenst@...omium.org>
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, dri-devel@...ts.freedesktop.org, 
	linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH] drm/mediatek: select DRM_GEM_DMA_HELPER if DRM_FBDEV_EMULATION=y

Hi, Chen-Yu:

Chen-Yu Tsai <wenst@...omium.org> 於 2024年6月20日 週四 下午1:47寫道：
>
> With the recent switch from fbdev-generic to fbdev-dma, the driver now
> requires the DRM GEM DMA helpers. This dependency is missing, and will
> cause a link failure if fbdev emulation is enabled.
>
> Add the missing dependency.

Acked-by: Chun-Kuang Hu <chunkuang.hu@...iatek.com>

>
> Fixes: 0992284b4fe4 ("drm/mediatek: Use fbdev-dma")
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> ---
> The commit this patch fixes is in drm-misc-next. Ideally this patch
> should be applied on top of it directly.
>
> CK, could you give your ack for it?
>
>  drivers/gpu/drm/mediatek/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
> index 96cbe020f493..d6449ebae838 100644
> --- a/drivers/gpu/drm/mediatek/Kconfig
> +++ b/drivers/gpu/drm/mediatek/Kconfig
> @@ -7,6 +7,7 @@ config DRM_MEDIATEK
>         depends on HAVE_ARM_SMCCC
>         depends on OF
>         depends on MTK_MMSYS
> +       select DRM_GEM_DMA_HELPER if DRM_FBDEV_EMULATION
>         select DRM_KMS_HELPER
>         select DRM_MIPI_DSI
>         select DRM_PANEL
> --
> 2.45.2.741.gdbec12cfda-goog
>