drm_hwcomposer: fix return values for ValidateDisplay
According to the API documentation, if we've set num_types, then the
return value should be HWC2::Error::HasChanges.
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/drmhwctwo.cpp b/drmhwctwo.cpp
index 89399bf..0f25877 100644
--- a/drmhwctwo.cpp
+++ b/drmhwctwo.cpp
@@ -701,7 +701,7 @@
break;
}
}
- return HWC2::Error::None;
+ return *num_types ? HWC2::Error::HasChanges : HWC2::Error::None;
}
HWC2::Error DrmHwcTwo::HwcLayer::SetCursorPosition(int32_t x, int32_t y) {