From: Arnd Bergmann <arnd@arndb.de>

A dependency on this feature was recently introduced:

x86_64-linux-ld: vmlinux.o: in function `tc358768_bridge_pre_enable':
tc358768.c:(.text+0xbe3dae): undefined reference to `drm_display_mode_to_videomode'

Make sure this is always enabled.

Fixes: e5fb21678136 ("drm/bridge: tc358768: Use struct videomode")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 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 ba82a1142adf..3e6a4e2044c0 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -313,6 +313,7 @@ config DRM_TOSHIBA_TC358768
 	select REGMAP_I2C
 	select DRM_PANEL
 	select DRM_MIPI_DSI
+	select VIDEOMODE_HELPERS
 	help
 	  Toshiba TC358768AXBG/TC358778XBG DSI bridge chip driver.
 
-- 
2.39.2

Hi,

On Mon, 04 Dec 2023 08:27:36 +0100, Arnd Bergmann wrote:
> A dependency on this feature was recently introduced:
> 
> x86_64-linux-ld: vmlinux.o: in function `tc358768_bridge_pre_enable':
> tc358768.c:(.text+0xbe3dae): undefined reference to `drm_display_mode_to_videomode'
> 
> Make sure this is always enabled.
> 
> [...]

Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-fixes)

[1/1] drm/bridge: tc358768: select CONFIG_VIDEOMODE_HELPERS
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=26513300978f7285c3e776c144f27ef71be61f57

-- 
Neil

On 04/12/2023 08:27, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> A dependency on this feature was recently introduced:
> 
> x86_64-linux-ld: vmlinux.o: in function `tc358768_bridge_pre_enable':
> tc358768.c:(.text+0xbe3dae): undefined reference to `drm_display_mode_to_videomode'
> 
> Make sure this is always enabled.
> 
> Fixes: e5fb21678136 ("drm/bridge: tc358768: Use struct videomode")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>   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 ba82a1142adf..3e6a4e2044c0 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -313,6 +313,7 @@ config DRM_TOSHIBA_TC358768
>   	select REGMAP_I2C
>   	select DRM_PANEL
>   	select DRM_MIPI_DSI
> +	select VIDEOMODE_HELPERS
>   	help
>   	  Toshiba TC358768AXBG/TC358778XBG DSI bridge chip driver.
>   

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>