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On 05/10/17 15:06, Arnd Bergmann wrote:
> The new backlight code causes a link failure when backlight
> support itself is disabled:
>
> drivers/gpu/drm/omapdrm/displays/panel-dpi.o: In function
> `panel_dpi_probe_of':
> panel-dpi.c:(.text+0x35c): undefined reference to `of_find_backlight_by_node'
>
> This adds a Kconfig dependency like we have for the other OMAP
> display targets.
>
> Fixes: 39135a305a0f ("drm/omap: displays: panel-dpi: Support for handling
> backlight devices")
> Signed-off-by: Arnd Bergmann <a...@arndb.de>
> ---
> drivers/gpu/drm/omapdrm/displays/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/Kconfig
> b/drivers/gpu/drm/omapdrm/displays/Kconfig
> index c226da145fb3..a349cb61961e 100644
> --- a/drivers/gpu/drm/omapdrm/displays/Kconfig
> +++ b/drivers/gpu/drm/omapdrm/displays/Kconfig
> @@ -35,6 +35,7 @@ config DRM_OMAP_CONNECTOR_ANALOG_TV
>
> config DRM_OMAP_PANEL_DPI
> tristate "Generic DPI panel"
> + depends on BACKLIGHT_CLASS_DEVICE
> help
> Driver for generic DPI panels.
Thanks, I've queued this for 4.14 fixes.
Tomi
