If using tcon with VGA, tcon->panel will be null(0), this will cause
segmentation fault when trying to dereference tcon->panel->connector.
Add tcon->panel null check before calling
sun4i_tcon0_mode_set_dithering().
Signed-off-by: Giulio Benetti <giulio.bene...@micronovasrl.com>
---
drivers/gpu/drm/sun4i/sun4i_tcon.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c
b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index e4b3bd0307ef..f949287d926c 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -491,7 +491,8 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon
*tcon,
sun4i_tcon0_mode_set_common(tcon, mode);
/* Set dithering if needed */
- sun4i_tcon0_mode_set_dithering(tcon, tcon->panel->connector);
+ if (tcon->panel)
+ sun4i_tcon0_mode_set_dithering(tcon, tcon->panel->connector);
/* Adjust clock delay */
clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
--
2.17.1
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