[PATCH] Reject plane sizes more than 4K for ICL (experimental fix for suspicious crc problems)
Stanislav Lisovskiy
stanislav.lisovskiy at intel.com
Fri Jan 11 14:57:46 UTC 2019
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108336
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bbc19d5341be..63d87b675245 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12728,6 +12728,18 @@ static int intel_atomic_check(struct drm_device *dev,
if (ret)
return ret;
+
+ if (IS_ICELAKE(dev_priv)) {
+ for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) {
+ if (new_plane_state->crtc_w >= 4096 ||
+ new_plane_state->crtc_x >= 4096 ||
+ new_plane_state->crtc_h >= 4096 ||
+ new_plane_state->crtc_y >= 4096) {
+ return -ERANGE;
+ }
+ }
+ }
+
intel_fbc_choose_crtc(dev_priv, intel_state);
return calc_watermark_data(intel_state);;
--
2.17.1
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