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drm/i915: Use fb modifiers in intel_check_cursor_plane

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Also drop the mutex since with universal planes there is always a
proper framebuffer around which wraps the underlying bo. Which means
tiling is locked down. This was different in the old code which
directly took gem handles. The looking though was always cargo-cult
since races where not prevented in any way.

v2: Unconditionally enforce untiled, because cursors are always
untiled. The check for physical or gtt cursor is irrelevant. Also
clarify the commit message a bit

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Tvrtko Ursulin 2015-02-10 17:16:14 +00:00 committed by Daniel Vetter
parent 66ebf56714
commit 6a418fcd84
1 changed files with 1 additions and 4 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -12173,13 +12173,10 @@ intel_check_cursor_plane(struct drm_plane *plane,
if (fb == crtc->cursor->fb)
return 0;
/* we only need to pin inside GTT if cursor is non-phy */
mutex_lock(&dev->struct_mutex);
if (!INTEL_INFO(dev)->cursor_needs_physical && obj->tiling_mode) {
if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
DRM_DEBUG_KMS("cursor cannot be tiled\n");
ret = -EINVAL;
}
mutex_unlock(&dev->struct_mutex);
finish:
if (intel_crtc->active) {