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GET /api/patches/1641653/?format=api
{ "id": 1641653, "url": "http://patchwork.ozlabs.org/api/patches/1641653/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ide/patch/20220610081801.11854-7-Sergey.Semin@baikalelectronics.ru/", "project": { "id": 13, "url": "http://patchwork.ozlabs.org/api/projects/13/?format=api", "name": "Linux IDE development", "link_name": "linux-ide", "list_id": "linux-ide.vger.kernel.org", "list_email": "linux-ide@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20220610081801.11854-7-Sergey.Semin@baikalelectronics.ru>", "list_archive_url": null, "date": "2022-06-10T08:17:44", "name": "[v4,06/23] ata: libahci_platform: Convert to using platform devm-ioremap methods", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d0206e9d307075c6f11e72834d71d389d14e8823", "submitter": { "id": 78624, "url": "http://patchwork.ozlabs.org/api/people/78624/?format=api", "name": "Serge Semin", "email": "Sergey.Semin@baikalelectronics.ru" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ide/patch/20220610081801.11854-7-Sergey.Semin@baikalelectronics.ru/mbox/", "series": [ { "id": 304159, "url": "http://patchwork.ozlabs.org/api/series/304159/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ide/list/?series=304159", "date": "2022-06-10T08:17:42", "name": "ata: ahci: Add DWC/Baikal-T1 AHCI SATA support", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/304159/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1641653/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1641653/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-ide-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "bilbo.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=baikalelectronics.ru header.i=@baikalelectronics.ru\n header.a=rsa-sha256 header.s=mail header.b=C3zlayNv;\n\tdkim-atps=neutral", "ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2620:137:e000::1:20; helo=out1.vger.email;\n envelope-from=linux-ide-owner@vger.kernel.org; receiver=<UNKNOWN>)" ], "Received": [ "from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20])\n\tby bilbo.ozlabs.org (Postfix) with ESMTP id 4LKDPc12fNz9s09\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 10 Jun 2022 18:18:44 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n id S1347279AbiFJISl (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n Fri, 10 Jun 2022 04:18:41 -0400", "from lindbergh.monkeyblade.net ([23.128.96.19]:34892 \"EHLO\n lindbergh.monkeyblade.net\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n with ESMTP id S1347162AbiFJISS (ORCPT\n <rfc822;linux-ide@vger.kernel.org>); Fri, 10 Jun 2022 04:18:18 -0400", "from mail.baikalelectronics.com (mail.baikalelectronics.com\n [87.245.175.230])\n by lindbergh.monkeyblade.net (Postfix) with ESMTP id A4359235B0A;\n Fri, 10 Jun 2022 01:18:16 -0700 (PDT)", "from mail (mail.baikal.int [192.168.51.25])\n by mail.baikalelectronics.com (Postfix) with ESMTP id 3CD2F16A7;\n Fri, 10 Jun 2022 11:19:00 +0300 (MSK)", "from localhost (192.168.53.207) by mail (192.168.51.25) with\n Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 10 Jun 2022 11:18:07 +0300" ], "DKIM-Filter": "OpenDKIM Filter v2.11.0 mail.baikalelectronics.com 3CD2F16A7", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=baikalelectronics.ru; s=mail; t=1654849140;\n bh=cwjTY+UXbYCa95/dq1KpC5+URj+jwo1L4bVykF4JcuI=;\n h=From:To:CC:Subject:Date:In-Reply-To:References:From;\n b=C3zlayNvOLSLbTJO3Mz1lUZzlLrubDMMSbB4otsv28Ez4JOHihCXHpi5Z77Emq/Ed\n oKWWD1FmuX506t3osYyTIlZBhU8R/tXSYRw8ERDBKaejCFBqH/Ow1Bhb84X+Q/2S72\n QDKmNq+23KBiI+cqbI8tOjBLqMHeIkN7l58aAidA=", "From": "Serge Semin <Sergey.Semin@baikalelectronics.ru>", "To": "Damien Le Moal <damien.lemoal@opensource.wdc.com>,\n Hans de Goede <hdegoede@redhat.com>,\n Jens Axboe <axboe@kernel.dk>, Hannes Reinecke <hare@suse.de>", "CC": "Serge Semin <Sergey.Semin@baikalelectronics.ru>,\n Serge Semin <fancer.lancer@gmail.com>,\n Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,\n Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,\n Rob Herring <robh+dt@kernel.org>, <linux-ide@vger.kernel.org>,\n <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>", "Subject": "[PATCH v4 06/23] ata: libahci_platform: Convert to using platform\n devm-ioremap methods", "Date": "Fri, 10 Jun 2022 11:17:44 +0300", "Message-ID": "<20220610081801.11854-7-Sergey.Semin@baikalelectronics.ru>", "In-Reply-To": "<20220610081801.11854-1-Sergey.Semin@baikalelectronics.ru>", "References": "<20220610081801.11854-1-Sergey.Semin@baikalelectronics.ru>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-ClientProxiedBy": "MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25)", "X-Spam-Status": "No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,\n DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS,\n T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no\n version=3.4.6", "X-Spam-Checker-Version": "SpamAssassin 3.4.6 (2021-04-09) on\n lindbergh.monkeyblade.net", "Precedence": "bulk", "List-ID": "<linux-ide.vger.kernel.org>", "X-Mailing-List": "linux-ide@vger.kernel.org" }, "content": "Currently the IOMEM AHCI registers space is mapped by means of the\ntwo functions invocation: platform_get_resource() is used to get the very\nfirst memory resource and devm_ioremap_resource() is called to remap that\nresource. Device-managed kernel API provides a handy wrapper to perform\nthe same in single function call: devm_platform_ioremap_resource().\n\nWhile at it seeing many AHCI platform drivers rely on having the AHCI CSR\nspace marked with \"ahci\" name let's first try to find and remap the CSR\nIO-mem with that name and only if it fails fallback to getting the very\nfirst registers space platform resource.\n\nSigned-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>\nReviewed-by: Hannes Reinecke <hare@suse.de>\n\n---\n\nChangelog v2:\n- Check whether there is \"ahci\" reg resource before using the\n devm_platform_ioremap_resource_byname() method in order to prevent a\n false error message printed in the log (@Damien)\n- Slightly update the patch title due to the change above and to be more\n specific about what the platform device managed methods are utilized\n for.\n---\n drivers/ata/libahci_platform.c | 10 ++++++++--\n 1 file changed, 8 insertions(+), 2 deletions(-)", "diff": "diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c\nindex 32495ae96567..1e9e825d6cc5 100644\n--- a/drivers/ata/libahci_platform.c\n+++ b/drivers/ata/libahci_platform.c\n@@ -402,8 +402,14 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,\n \n \tdevres_add(dev, hpriv);\n \n-\thpriv->mmio = devm_ioremap_resource(dev,\n-\t\t\t platform_get_resource(pdev, IORESOURCE_MEM, 0));\n+\t/*\n+\t * If the DT provided an \"ahci\" named resource, use it. Otherwise,\n+\t * fallback to using the default first resource for the device node.\n+\t */\n+\tif (platform_get_resource_byname(pdev, IORESOURCE_MEM, \"ahci\"))\n+\t\thpriv->mmio = devm_platform_ioremap_resource_byname(pdev, \"ahci\");\n+\telse\n+\t\thpriv->mmio = devm_platform_ioremap_resource(pdev, 0);\n \tif (IS_ERR(hpriv->mmio)) {\n \t\trc = PTR_ERR(hpriv->mmio);\n \t\tgoto err_out;\n", "prefixes": [ "v4", "06/23" ] }