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GET /api/patches/2231292/?format=api
{ "id": 2231292, "url": "http://patchwork.ozlabs.org/api/patches/2231292/?format=api", "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=api", "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": "<eabb6434-6827-48cb-bd2c-964b94ea07ba@grenoble.cnrs.fr>", "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=api", "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=api", "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": "<buildroot-bounces@buildroot.org>", "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\" <buildroot-bounces@buildroot.org>" }, "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 <bonet@grenoble.cnrs.fr>\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" ] }