From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Wed, 6 Dec 2017 16:26:03 +0100
Subject: drm/sun4i: Fix uninitialized variables in vi layer
Git-commit: bc29489f712079378081e43d5b1b7470ed70184d
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
min_scale and max_scale in sun8i_vi_layer_atomic_check() can be used
without initialization.
Fix that.
Fixes: b862a648de3b ("drm/sun4i: Add support for HW scaling to DE2")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171206152603.25937-1-jernej.skrabec@siol.net
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
@@ -253,6 +253,9 @@ static int sun8i_vi_layer_atomic_check(s
clip.x2 = crtc_state->adjusted_mode.hdisplay;
clip.y2 = crtc_state->adjusted_mode.vdisplay;
+ min_scale = DRM_PLANE_HELPER_NO_SCALING;
+ max_scale = DRM_PLANE_HELPER_NO_SCALING;
+
if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) {
min_scale = SUN8I_VI_SCALER_SCALE_MIN;
max_scale = SUN8I_VI_SCALER_SCALE_MAX;