[Intel-gfx] [PATCH 18/22] drm/i915: Use drm_mode_init() for on-stack modes

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Initialize on-stack modes with drm_mode_init() to guarantee
no stack garbage in the list head, or that we aren't copying
over another mode's list head.

Based on the following cocci script, with manual fixups:
@decl@
identifier M;
expression E;
@@
- struct drm_display_mode M = E;
+ struct drm_display_mode M;

@@
identifier decl.M;
expression decl.E;
statement S, S1;
@@
struct drm_display_mode M;
... when != S
+ drm_mode_init(&M, &E);
+
S1

@@
expression decl.E;
@@
- &*E
+ E

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 740620ef07ad..74c5a99ab276 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6898,8 +6898,9 @@ intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct drm_display_mode adjusted_mode =
-		crtc_state->hw.adjusted_mode;
+	struct drm_display_mode adjusted_mode;
+
+	drm_mode_init(&adjusted_mode, &crtc_state->hw.adjusted_mode);
 
 	if (crtc_state->vrr.enable) {
 		adjusted_mode.crtc_vtotal = crtc_state->vrr.vmax;
-- 
2.34.1