From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 9 Jul 2018 17:20:29 +0200
Subject: drm/tinydrm: add backlight dependency for ili9341
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Git-commit: 77c56fd3c8cf5adcba9cffcc29ead295211bdae8
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

This tinydrm driver fails to link without the backlight support:

drivers/gpu/drm/tinydrm/ili9341.o: In function `ili9341_probe':
ili9341.c:(.text+0x578): undefined reference to `devm_of_find_backlight'

Fixes: 3fa0e8f6f960 ("drm/tinydrm: new driver for ILI9341 display panels")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: David Lechner <david@lechnology.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180709152106.990066-1-arnd@arndb.de

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/tinydrm/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/tinydrm/Kconfig
+++ b/drivers/gpu/drm/tinydrm/Kconfig
@@ -23,6 +23,7 @@ config TINYDRM_ILI9225
 config TINYDRM_ILI9341
 	tristate "DRM support for ILI9341 display panels"
 	depends on DRM_TINYDRM && SPI
+	depends on BACKLIGHT_CLASS_DEVICE
 	select TINYDRM_MIPI_DBI
 	help
 	  DRM driver for the following Ilitek ILI9341 panels: