Merge tag 'drm-intel-fixes-2020-10-29' of git://anongit.freedesktop.org/drm/drm-intel...

[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / display / intel_display.c

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index a1fba7e..31337d2 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3434,6 +3434,14 @@ initial_plane_vma(struct drm_i915_private *i915,
        if (IS_ERR(obj))
                return NULL;
 
+       /*
+        * Mark it WT ahead of time to avoid changing the
+        * cache_level during fbdev initialization. The
+        * unbind there would get stuck waiting for rcu.
+        */
+       i915_gem_object_set_cache_coherency(obj, HAS_WT(i915) ?
+                                           I915_CACHE_WT : I915_CACHE_NONE);
+
        switch (plane_config->tiling) {
        case I915_TILING_NONE:
                break;
@@ -10628,6 +10636,10 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
            val & PLANE_CTL_FLIP_HORIZONTAL)
                plane_config->rotation |= DRM_MODE_REFLECT_X;
 
+       /* 90/270 degree rotation would require extra work */
+       if (drm_rotation_90_or_270(plane_config->rotation))
+               goto error;
+
        base = intel_de_read(dev_priv, PLANE_SURF(pipe, plane_id)) & 0xfffff000;
        plane_config->base = base;