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Upstream Linux kernel changes from v5.0 and above versions will affect the use of Device Tree (DT) overlays. These changes introduce restrictions that may require users to adjust their device tree overlays. Fortunately the adjustments required are small. However, even with adjustments users will experience new warnings with no functional impact. With continued upstream improvements, the new warnings are expected to subside in the future. We can ignore these warnings for now.
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Upstream overlay framework incorrectly updates the configfs ‘status’ to ‘applied’ when there is an error in create_overlay() and libdfx checks the content of the status file to decide if the overlay was a success or not. Hence libdfx dfx_cfg_load() API doesn’t return a proper status in certain use cases.