Hi Frank, Rob, I ran some tests with kernel v4.14-rc2, where I came across an issue with your commit "of: overlay: add overlay symbols to live device tree" (d1651b03c2df75db8eda3fbcd3a07adb337ee8b0, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/of?h=v4.14-rc5&id=d1651b03c2df75db8eda3fbcd3a07adb337ee8b0). I am not sure whether this is a problem with your change or whether I made a mistake somewhere. Without this commit, the following device tree overlay works fine on a Raspberry Pi: /dts-v1/; /plugin/; / { fragment@0 { target-path = "/soc/spi@7e204000"; __overlay__ { #address-cells = <1>; #size-cells = <0>; status = "okay"; spidev1: spi@1 { compatible = "spidev"; reg = <1>; spi-max-frequency = <5000000>; }; }; }; }; But with the commit, it is rejected: OF: overlay: no symbols in root of device tree. OF: overlay: of_build_overlay_info() failed for tree@/ create_overlay: Failed to create overlay (err=-22) Only if I remove the spidev1 label, it continues to work with the commit (but this is not always possible in more complex overlays). I hope this does not make a difference, but I use the configfs interface to load the overlay, that is not part of mainline, but shipped by several distributions nonetheless (for example in the Raspberry Pi kernel, https://github.com/raspberrypi/linux/commit/cccc24635da69799335566eb464a4c9e1fb4a8ad). Could you tell me whether this change in behavior is intentional and whether I have to fix something in my usage? Thanks Alexander -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
