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SubjectRe: [PATCH] drm: rcar-du: Fix build error
On Tue, 19 May 2020 at 08:01, Daniel Gomez <dagmcr@gmail.com> wrote:
>
> Select DRM_KMS_HELPER dependency.
>
> Build error when DRM_KMS_HELPER is not selected:
>
> drivers/gpu/drm/rcar-du/rcar_lvds.o:(.rodata+0xd48): undefined reference to `drm_atomic_helper_bridge_duplicate_state'
> drivers/gpu/drm/rcar-du/rcar_lvds.o:(.rodata+0xd50): undefined reference to `drm_atomic_helper_bridge_destroy_state'
> drivers/gpu/drm/rcar-du/rcar_lvds.o:(.rodata+0xd70): undefined reference to `drm_atomic_helper_bridge_reset'
> drivers/gpu/drm/rcar-du/rcar_lvds.o:(.rodata+0xdc8): undefined reference to `drm_atomic_helper_connector_reset'
> drivers/gpu/drm/rcar-du/rcar_lvds.o:(.rodata+0xde0): undefined reference to `drm_helper_probe_single_connector_modes'
> drivers/gpu/drm/rcar-du/rcar_lvds.o:(.rodata+0xe08): undefined reference to `drm_atomic_helper_connector_duplicate_state'
> drivers/gpu/drm/rcar-du/rcar_lvds.o:(.rodata+0xe10): undefined reference to `drm_atomic_helper_connector_destroy_state'
>
> Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Nicely spotted.
AFAICT the only way this ever worked is if people had
DRM_FBDEV_EMULATION, which is unset in your case.

Cc: <stable@vger.kernel.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

I suspect Laurent will pick this in due time.
-Emil

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