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GET /api/patches/806605/?format=api
{ "id": 806605, "url": "http://patchwork.ozlabs.org/api/patches/806605/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20170828142307.30061-4-l.stach@pengutronix.de/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170828142307.30061-4-l.stach@pengutronix.de>", "list_archive_url": null, "date": "2017-08-28T14:23:07", "name": "[3/3] ARM: dts: imx6qdl: remove MSI irq line", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "d2aea11b653ecebf166cfecad532724d710ea8d7", "submitter": { "id": 23583, "url": "http://patchwork.ozlabs.org/api/people/23583/?format=api", "name": "Lucas Stach", "email": "l.stach@pengutronix.de" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20170828142307.30061-4-l.stach@pengutronix.de/mbox/", "series": [ { "id": 182, "url": "http://patchwork.ozlabs.org/api/series/182/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=182", "date": "2017-08-28T14:23:05", "name": "DWC host without MSI controller", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/182/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/806605/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/806605/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-pci-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-pci-owner@vger.kernel.org;\n\treceiver=<UNKNOWN>)", "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xgvBc4RSsz9sMN\n\tfor <incoming@patchwork.ozlabs.org>;\n\tTue, 29 Aug 2017 00:23:20 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751862AbdH1OXO (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n\tMon, 28 Aug 2017 10:23:14 -0400", "from metis.ext.4.pengutronix.de ([92.198.50.35]:41043 \"EHLO\n\tmetis.ext.4.pengutronix.de\" rhost-flags-OK-OK-OK-OK)\n\tby vger.kernel.org with ESMTP id S1751858AbdH1OXN (ORCPT\n\t<rfc822; linux-pci@vger.kernel.org>); Mon, 28 Aug 2017 10:23:13 -0400", "from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]\n\thelo=dude.pengutronix.de.)\n\tby metis.ext.pengutronix.de with esmtp (Exim 4.84_2)\n\t(envelope-from <l.stach@pengutronix.de>)\n\tid 1dmKwX-0005gz-EC; Mon, 28 Aug 2017 16:23:09 +0200" ], "From": "Lucas Stach <l.stach@pengutronix.de>", "To": "Bjorn Helgaas <bhelgaas@google.com>, Tim Harvey <tharvey@gateworks.com>,\n\tJingoo Han <jingoohan1@gmail.com>, Joao Pinto <Joao.Pinto@synopsys.com>,\n\tShawn Guo <shawnguo@kernel.org>", "Cc": "linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,\n\tpatchwork-lst@pengutronix.de, kernel@pengutronix.de", "Subject": "[PATCH 3/3] ARM: dts: imx6qdl: remove MSI irq line", "Date": "Mon, 28 Aug 2017 16:23:07 +0200", "Message-Id": "<20170828142307.30061-4-l.stach@pengutronix.de>", "X-Mailer": "git-send-email 2.11.0", "In-Reply-To": "<20170828142307.30061-1-l.stach@pengutronix.de>", "References": "<20170828142307.30061-1-l.stach@pengutronix.de>", "X-SA-Exim-Connect-IP": "2001:67c:670:100:1d::7", "X-SA-Exim-Mail-From": "l.stach@pengutronix.de", "X-SA-Exim-Scanned": "No (on metis.ext.pengutronix.de);\n\tSAEximRunCond expanded to false", "X-PTX-Original-Recipient": "linux-pci@vger.kernel.org", "Sender": "linux-pci-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<linux-pci.vger.kernel.org>", "X-Mailing-List": "linux-pci@vger.kernel.org" }, "content": "The DWC PCIe host controller doesn't support MSI and legacy IRQs at\nthe same time. If the MSI controller is in use (which is always the case,\nas PCIe port serives are using MSI IRQs when available), legacy endpoint\ndevices are unable to raise an IRQ.\n\nRemove the MSI irq line to inhibit the MSI controller from being used,\nwhich is a much better default, as most enpoint devices are able to fall\nback to legacy PCIe IRQs, if MSI are not available.\n\nSystems which are validated to work in MSI only mode can opt-in to use\nthe MSI controller by adding back the MSI irq line in the board DT.\n\nSigned-off-by: Lucas Stach <l.stach@pengutronix.de>\n---\n arch/arm/boot/dts/imx6qdl.dtsi | 2 --\n 1 file changed, 2 deletions(-)", "diff": "diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi\nindex a9723b94bafa..0f47a9d4024e 100644\n--- a/arch/arm/boot/dts/imx6qdl.dtsi\n+++ b/arch/arm/boot/dts/imx6qdl.dtsi\n@@ -209,8 +209,6 @@\n \t\t\tranges = <0x81000000 0 0 0x01f80000 0 0x00010000 /* downstream I/O */\n \t\t\t\t 0x82000000 0 0x01000000 0x01000000 0 0x00f00000>; /* non-prefetchable memory */\n \t\t\tnum-lanes = <1>;\n-\t\t\tinterrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;\n-\t\t\tinterrupt-names = \"msi\";\n \t\t\t#interrupt-cells = <1>;\n \t\t\tinterrupt-map-mask = <0 0 0 0x7>;\n \t\t\tinterrupt-map = <0 0 0 1 &gpc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,\n", "prefixes": [ "3/3" ] }