{"id":2231292,"url":"http://patchwork.ozlabs.org/api/patches/2231292/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/patch/eabb6434-6827-48cb-bd2c-964b94ea07ba@grenoble.cnrs.fr/","project":{"id":27,"url":"http://patchwork.ozlabs.org/api/projects/27/?format=json","name":"Buildroot development","link_name":"buildroot","list_id":"buildroot.buildroot.org","list_email":"buildroot@buildroot.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"","list_archive_url":null,"date":"2026-04-30T14:09:53","name":"[1/1] package/libgpiod: enable the kernel GPIO ABI v1","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"c6a7cd12c606517c04283a9354121f7d00b7b6d5","submitter":{"id":81297,"url":"http://patchwork.ozlabs.org/api/people/81297/?format=json","name":"Edgar Bonet","email":"bonet@grenoble.cnrs.fr"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/buildroot/patch/eabb6434-6827-48cb-bd2c-964b94ea07ba@grenoble.cnrs.fr/mbox/","series":[{"id":502311,"url":"http://patchwork.ozlabs.org/api/series/502311/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/list/?series=502311","date":"2026-04-30T14:09:53","name":"[1/1] package/libgpiod: enable the kernel GPIO ABI v1","version":1,"mbox":"http://patchwork.ozlabs.org/series/502311/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2231292/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2231292/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming-buildroot@patchwork.ozlabs.org","buildroot@buildroot.org"],"Delivered-To":["patchwork-incoming-buildroot@legolas.ozlabs.org","buildroot@buildroot.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=buildroot.org header.i=@buildroot.org\n header.a=rsa-sha256 header.s=default header.b=A+Ggou0A;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=buildroot.org\n (client-ip=2605:bc80:3010::137; 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charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"buildroot-bounces@buildroot.org","Sender":"\"buildroot\" "},"content":"Unlike libgpiod2, this version of libgpiod relies on the deprecated GPIO\nABI version 1. This ABI used to be enabled by default. However, since\nLinux 7.1-rc1 (commit 7673e4c7f7f9 \"Do not enable the v1 uAPI by\ndefault\"), this is not the case anymore. Failing to enable the ABI\nresults in a non-functional libgpiod. For instance:\n\n # gpioinfo\n gpioinfo: error creating line iterator: Invalid argument\n\nFix this by enabling the ABI v1 in LIBGPIOD_LINUX_CONFIG_FIXUPS.\n\nSigned-off-by: Edgar Bonet \n---\nI noticed the problem on an Acmesystems Acqua-A5 board. Tested the patch\nin qemu as follows:\n\n sed -i -e '/# CONFIG_GPIOLIB is not set/d' \\\n board/qemu/arm-versatile/linux.fragment\n make qemu_arm_versatile_defconfig\n utils/config -d PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_18\n utils/config -e PACKAGE_HOST_LINUX_HEADERS_CUSTOM_7_0 # \"7.0 or later\"\n utils/config -d DOWNLOAD_FORCE_CHECK_HASHES\n utils/config --set-str LINUX_KERNEL_CUSTOM_VERSION_VALUE 7.1-rc1\n utils/config -e PACKAGE_LIBGPIOD\n utils/config -e PACKAGE_LIBGPIOD_TOOLS\n make\n output/images/start-qemu.sh\n---\n package/libgpiod/libgpiod.mk | 4 ++++\n 1 file changed, 4 insertions(+)","diff":"diff --git a/package/libgpiod/libgpiod.mk b/package/libgpiod/libgpiod.mk\nindex f669643b39..f5584a9f1e 100644\n--- a/package/libgpiod/libgpiod.mk\n+++ b/package/libgpiod/libgpiod.mk\n@@ -24,6 +24,10 @@ else\n LIBGPIOD_CONF_OPTS += --disable-tools\n endif\n \n+define LIBGPIOD_LINUX_CONFIG_FIXUPS\n+ $(call KCONFIG_ENABLE_OPT,CONFIG_GPIO_CDEV_V1)\n+endef\n+\n ifeq ($(BR2_INSTALL_LIBSTDCPP),y)\n LIBGPIOD_CONF_OPTS += --enable-bindings-cxx\n else\n","prefixes":["1/1"]}