linux-kernel - [PATCH 1/3] drm/omap: displays: panel-dpi: add backlight dependency

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Date:   Wed, 19 Apr 2017 19:59:17 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Tomi Valkeinen <tomi.valkeinen@...com>,
        David Airlie <airlied@...ux.ie>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] drm/omap: displays: panel-dpi: add backlight dependency

The panel driver gained support for backlight but fails to link now
when that is disabled:

drivers/gpu/drm/omapdrm/displays/panel-dpi.o: In function `panel_dpi_probe_of':
panel-dpi.c:(.text.panel_dpi_probe_of+0xe8): undefined reference to `of_find_backlight_by_node'

This adds a dependency like we have for the other panel drivers.

Fixes: 39135a305a0f ("drm/omap: displays: panel-dpi: Support for handling backlight devices")
Signed-off-by: Arnd Bergmann <arnd@...db.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.
 
-- 
2.9.0