Re: [PATCH] drm/mediatek: select DRM_GEM_DMA_HELPER if DRM_FBDEV_EMULATION=y

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Hi

Am 20.06.24 um 07:47 schrieb Chen-Yu Tsai:
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.

Fixes: 0992284b4fe4 ("drm/mediatek: Use fbdev-dma")
Signed-off-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>

Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

Apart from this problem, would it make sense to convert the driver's management to GEM's DMA helpers? It appears there's some code duplication in mtk_gem.c and these helpers.

Best regards
Thomas

---
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

--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)




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