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On 04/20/2017 03:03 AM, Arnd Bergmann wrote:<br>
<blockquote cite="mid:20170419180326.303994-1-arnd@arndb.de"
type="cite">
<pre wrap="">Without the dependency, we run into a link error:
drivers/gpu/drm/panel/panel-sitronix-st7789v.o: In function `st7789v_probe':
panel-sitronix-st7789v.c:(.text.st7789v_probe+0xc0): undefined reference to `of_find_backlight_by_node'
Fixes: 7142afb3a186 ("drm/panel: Add driver for sitronix ST7789V LCD controller")
Signed-off-by: Arnd Bergmann <a class="moz-txt-link-rfc2396E" href="mailto:arnd@arndb.de"><arnd@arndb.de></a></pre>
</blockquote>
<br>
Reviewed-by: Hoegeun Kwon <a class="moz-txt-link-rfc2396E"
href="mailto:hoegeun.kwon@samsung.com"><hoegeun.kwon@samsung.com></a>
<br>
<br>
Best regards,
<br>
Hoegeun<br>
<br>
<blockquote cite="mid:20170419180326.303994-1-arnd@arndb.de"
type="cite">
<pre wrap="">
---
drivers/gpu/drm/panel/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 6eb9774284df..04d068177e16 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -101,6 +101,7 @@ config DRM_PANEL_SHARP_LS043T1LE01
config DRM_PANEL_SITRONIX_ST7789V
tristate "Sitronix ST7789V panel"
depends on OF && SPI
+ depends on BACKLIGHT_CLASS_DEVICE
help
Say Y here if you want to enable support for the Sitronix
ST7789V controller for 240x320 LCD panels
</pre>
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