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GET /api/1.0/patches/2197780/?format=api
{ "id": 2197780, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197780/?format=api", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.0/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/" }, "msgid": "<20260218135203.2267907-5-maz@kernel.org>", "date": "2026-02-18T13:52:01", "name": "[4/6] fsl_mc: Switch over to per-device platform MSI", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "1a4db549f880e890ff9d3ec6849da78b6be7ce67", "submitter": { "id": 77095, "url": "http://patchwork.ozlabs.org/api/1.0/people/77095/?format=api", "name": "Marc Zyngier", "email": "maz@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260218135203.2267907-5-maz@kernel.org/mbox/", "series": [ { "id": 492556, "url": "http://patchwork.ozlabs.org/api/1.0/series/492556/?format=api", "date": "2026-02-18T13:51:58", "name": "fsl-mc: Move fsl_over to device MSI", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/492556/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197780/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-16931-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=QszJY6id;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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Thu, 19 Feb 2026 00:52:29 +1100 (AEDT)", "from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fGHxq2L3Jz3br7;\n\tThu, 19 Feb 2026 00:52:15 +1100 (AEDT)", "from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4fGHxm0TPgz3bnD\n\tfor <linuxppc-dev@lists.ozlabs.org>; Thu, 19 Feb 2026 00:52:11 +1100 (AEDT)", "from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n\tby tor.source.kernel.org (Postfix) with ESMTP id 8A15E6185E;\n\tWed, 18 Feb 2026 13:52:09 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 3A584C19424;\n\tWed, 18 Feb 2026 13:52:09 +0000 (UTC)", "from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan)\n\tby disco-boy.misterjones.org with esmtpsa (TLS1.3) tls\n TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384\n\t(Exim 4.98.2)\n\t(envelope-from <maz@kernel.org>)\n\tid 1vshyJ-0000000Bu02-1u1c;\n\tWed, 18 Feb 2026 13:52:07 +0000" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1771422734;\n\tcv=none;\n b=i0ofgS6G5IO7VwNkYFYPfSgYUfgBZybjLn0nn/diOyCJhcdbEvDcYnJRBwjBBb/HHn/9hlRmR9Qf31PDT0JKtnvCOJTxmXORuSS2//HS2WOMOhhSSDxQMQHqZLdl7vvYp3rgwW2mpNZupIgiRRZZSU2a0M7lORyqmHdUvZhluCd/3sfWPbfXp9tuK5YnctOWeDE3IrEAdPZVuu/+a52bUD0nBETYXXsaEIiGZPNvLUnxoVBerlemUBCsb3KTbQNYoJwaheosApxlAF/dwziE1h4S3PnPt9PxLf1WyDLy3YZoIi9rpkZICr73TVGZKmy58iOjLUs++J1BzVKwWUuU7Q==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1771422734; c=relaxed/relaxed;\n\tbh=ZW93bZ55Q9noPPJwsWjiJPwE2eVOkwSBRs3GyIo3O5s=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=caw9RPgkkghLGsoRkMlSWVkoj5CpkbgcYIVVP/cxDHIiwtL0hN8Zjcj4Xcy/ikPjIT1jLLnOQVR8TQpgFcQqrveAdxka/+nwD85X1R294xbbio7Fz21bZpqxowEEBJMDYxB1OUaPXYeNGjrAL3wz0Liii4pA5bIvcdGw8ayGGa85ga4ZnGXETfx422wKH4RHnLQs7Hm+an50nIrQMzP0HS44gi7Aw8enh9/jgFXWswjxiOJurlIqyZEMelOSF9GguPwVKZf6tXtlh/v0tyUvOLHHBaGHBse3WLIEPZoDf7WxOW584zMWW3bocH5SFPZBVXdCMhGzq0qnMrqGTT1HuA==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=QszJY6id; dkim-atps=neutral;\n spf=pass (client-ip=172.105.4.254; helo=tor.source.kernel.org;\n envelope-from=maz@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1771422729;\n\tbh=OzMg1Hi4/8VmDJXStqfMwWgmBNW4HuWjLq4C/QxlQD4=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=QszJY6id0HLRpEvQvHeK74fP0Wape38lmqGan0XqggOUTLKhaVGNpNTk52i1H+92O\n\t 3J7mpXmG5Di4NLx+UyTXaD6Lpmgo+qUd1RRmykK9mvBTD8GXLROwSoeM3p79UOqQli\n\t YT2IO/q0nc2ocVoDzIGr9b008v3D39I+rRWHciP2sH03rBnN3MJIr3l4IcGz4nGrhH\n\t 1TWLRhxQBbJIKULPX6GYy1nyD9d+f3fwalSOSh2Ub7sjmpnh/RRUu/TPoFyU6gDr4K\n\t XNJXrFw92FGpL33R3naGrhfYTURQ7t412s/AmeF8L8ThwbfnL3VIuFz4OoDD6tmTO+\n\t Tpug0WeC5V4YQ==", "From": "Marc Zyngier <maz@kernel.org>", "To": "Ioana Ciornei <ioana.ciornei@nxp.com>,\n\tThomas Gleixner <tglx@kernel.org>,\n\t\"Christophe Leroy (CS GROUP)\" <chleroy@kernel.org>", "Cc": "linux-kernel@vger.kernel.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinuxppc-dev@lists.ozlabs.org", "Subject": "[PATCH 4/6] fsl_mc: Switch over to per-device platform MSI", "Date": "Wed, 18 Feb 2026 13:52:01 +0000", "Message-ID": "<20260218135203.2267907-5-maz@kernel.org>", "X-Mailer": "git-send-email 2.47.3", "In-Reply-To": "<20260218135203.2267907-1-maz@kernel.org>", "References": "<20260218135203.2267907-1-maz@kernel.org>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-SA-Exim-Connect-IP": "185.219.108.64", "X-SA-Exim-Rcpt-To": "ioana.ciornei@nxp.com, tglx@kernel.org, chleroy@kernel.org,\n linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,\n linuxppc-dev@lists.ozlabs.org", "X-SA-Exim-Mail-From": "maz@kernel.org", "X-SA-Exim-Scanned": "No (on disco-boy.misterjones.org);\n SAEximRunCond expanded to false", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Obtain the msi-parent irqdomain instead of the fsl_mc domain,\nwhich magically engages the per-device infrastructure.\n\nAdditionally, simplify the overly complicated error handling.\n\nSigned-off-by: Marc Zyngier <maz@kernel.org>\n---\n drivers/bus/fsl-mc/dprc-driver.c | 14 +++++---------\n 1 file changed, 5 insertions(+), 9 deletions(-)", "diff": "diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c\nindex c63a7e688db6a..8ee5fb3c2d416 100644\n--- a/drivers/bus/fsl-mc/dprc-driver.c\n+++ b/drivers/bus/fsl-mc/dprc-driver.c\n@@ -620,9 +620,8 @@ int dprc_setup(struct fsl_mc_device *mc_dev)\n {\n \tstruct device *parent_dev = mc_dev->dev.parent;\n \tstruct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);\n-\tstruct irq_domain *mc_msi_domain;\n+\tstruct irq_domain *mc_msi_domain = NULL;\n \tbool mc_io_created = false;\n-\tbool msi_domain_set = false;\n \tbool uapi_created = false;\n \tu16 major_ver, minor_ver;\n \tsize_t region_size;\n@@ -663,14 +662,12 @@ int dprc_setup(struct fsl_mc_device *mc_dev)\n \t\tuapi_created = true;\n \t}\n \n-\tmc_msi_domain = fsl_mc_find_msi_domain(&mc_dev->dev);\n-\tif (!mc_msi_domain) {\n+\tmc_msi_domain = fsl_mc_get_msi_parent(&mc_dev->dev);\n+\tif (!mc_msi_domain)\n \t\tdev_warn(&mc_dev->dev,\n \t\t\t \"WARNING: MC bus without interrupt support\\n\");\n-\t} else {\n+\telse\n \t\tdev_set_msi_domain(&mc_dev->dev, mc_msi_domain);\n-\t\tmsi_domain_set = true;\n-\t}\n \n \terror = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,\n \t\t\t &mc_dev->mc_handle);\n@@ -710,8 +707,7 @@ int dprc_setup(struct fsl_mc_device *mc_dev)\n \t(void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);\n \n error_cleanup_msi_domain:\n-\tif (msi_domain_set)\n-\t\tdev_set_msi_domain(&mc_dev->dev, NULL);\n+\tdev_set_msi_domain(&mc_dev->dev, NULL);\n \n \tif (mc_io_created) {\n \t\tfsl_destroy_mc_io(mc_dev->mc_io);\n", "prefixes": [ "4/6" ] }