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GET /api/patches/811652/?format=api
{ "id": 811652, "url": "http://patchwork.ozlabs.org/api/patches/811652/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pwm/patch/20170908153604.28383-2-romain.izard.pro@gmail.com/", "project": { "id": 38, "url": "http://patchwork.ozlabs.org/api/projects/38/?format=api", "name": "Linux PWM development", "link_name": "linux-pwm", "list_id": "linux-pwm.vger.kernel.org", "list_email": "linux-pwm@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170908153604.28383-2-romain.izard.pro@gmail.com>", "list_archive_url": null, "date": "2017-09-08T15:35:55", "name": "[v1,01/10] clk: at91: pmc: Wait for clocks when resuming", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "3c0aefa7e09b25b04e247655ccad78b77581748f", "submitter": { "id": 8236, "url": "http://patchwork.ozlabs.org/api/people/8236/?format=api", "name": "Romain Izard", "email": "romain.izard.pro@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pwm/patch/20170908153604.28383-2-romain.izard.pro@gmail.com/mbox/", "series": [ { "id": 2238, "url": "http://patchwork.ozlabs.org/api/series/2238/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pwm/list/?series=2238", "date": "2017-09-08T15:35:55", "name": "Various patches for SAMA5D2 backup mode", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/2238/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/811652/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/811652/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-pwm-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-pwm-owner@vger.kernel.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"i6EOBulN\"; dkim-atps=neutral" ], "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xphHp6nkWz9sBZ\n\tfor <incoming@patchwork.ozlabs.org>;\n\tSat, 9 Sep 2017 01:36:21 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S932120AbdIHPgT (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n\tFri, 8 Sep 2017 11:36:19 -0400", "from mail-wm0-f67.google.com ([74.125.82.67]:37138 \"EHLO\n\tmail-wm0-f67.google.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1756543AbdIHPgR (ORCPT\n\t<rfc822;linux-pwm@vger.kernel.org>); Fri, 8 Sep 2017 11:36:17 -0400", "by mail-wm0-f67.google.com with SMTP id f4so1972209wmh.4;\n\tFri, 08 Sep 2017 08:36:15 -0700 (PDT)", "from localhost.localdomain (146.187.3.109.rev.sfr.net.\n\t[109.3.187.146]) by smtp.gmail.com with ESMTPSA id\n\tp199sm1689224wmb.28.2017.09.08.08.36.13\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tFri, 08 Sep 2017 08:36:14 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=gmail.com; s=20161025;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=QpAJytz+aiNN6ugMH0pd0IRk4M6Nw+EoUUnBnzUoU6Q=;\n\tb=i6EOBulN8YFDPPcLnFOi2ORTbNpVr5uBBKSVaIhENa2jfTZx0sLc+ugZDHWClO1GwQ\n\tbhrAv2RM1KdbKFPEv3g4kBTFJKYR0xZGPC1pOAazcu3m+D7dt9Djf/WHPnjTMvsNobRr\n\tXQ1fMPAyTJFzk23gt6Qfz2Pp0XAJJsXzF/oOhAcSuG7t1KLFAzqwg516F+WjudqcbEZw\n\tEPvojp4xWi0mPdKhRy6Er9Exko5AhW6RFL5KJ2pX7xR2JHzg3J+Dtb7K1YFRYBbN63wt\n\txMNz9zn8kJ2NF6cwfJczwOcnkmCl/+XVNgYM4hWWkAYgT28Khnfyz+wR3jnLXYszsI/8\n\t+GeA==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=QpAJytz+aiNN6ugMH0pd0IRk4M6Nw+EoUUnBnzUoU6Q=;\n\tb=sys6McGkCExm+l5rmpdcQOwwhaVWFhfgz1BsUi2LqlQlQk4tRmKmz727UlNOPE50Sq\n\tazIEkZcFI1Xk6npfzvf2gJduepUnJCU/i7ijic3o4CTvlxTuKErekBrunKPn0zhdjcdJ\n\tTOdSyTQzAfers/245cvSC2N3CPlCBLHpdym4ETtL2nFhHMLnuOWo/j47Pi+V0C7WVoGs\n\tzfBT0PySYbf2Ej0NQw5zZPn27bT3s6yUfdh9W3s3XR6mgYuqlwaglM116ITa3XdP7b7U\n\tyKE1xFUq0Vc2VqZUTGWUkob10VInZj+qUX+Jer8jOS1qXNIpx4qkjtKkobXECutauEcL\n\tSfYw==", "X-Gm-Message-State": "AHPjjUgnyS/3sJVOcivs4Kqtt885cFB8O8RxVTQbuCTDEvjnvBcvQfFD\n\txtoRrYD4u0F4QADMoLwWYAY=", "X-Google-Smtp-Source": "ADKCNb4fLcqaI4Bbux5Uj+MvxzRvSdLca1ahW6b+xJ5qnWs3ry78s7WhZ/UvNl37XkVAX6PhlG5ZZA==", "X-Received": "by 10.28.48.71 with SMTP id w68mr213535wmw.3.1504884975148;\n\tFri, 08 Sep 2017 08:36:15 -0700 (PDT)", "From": "Romain Izard <romain.izard.pro@gmail.com>", "To": "Nicolas Ferre <nicolas.ferre@microchip.com>,\n\tBoris Brezillon <boris.brezillon@free-electrons.com>,\n\tMichael Turquette <mturquette@baylibre.com>,\n\tStephen Boyd <sboyd@codeaurora.org>,\n\tLudovic Desroches <ludovic.desroches@microchip.com>,\n\tJonathan Cameron <jic23@kernel.org>, Wenyou Yang <wenyou.yang@atmel.com>,\n\tJosh Wu <rainyfeeling@outlook.com>,\n\tDavid Woodhouse <dwmw2@infradead.org>,\n\tBrian Norris <computersforpeace@gmail.com>,\n\tMarek Vasut <marek.vasut@gmail.com>,\n\tCyrille Pitchen <cyrille.pitchen@wedev4u.fr>,\n\tThierry Reding <thierry.reding@gmail.com>,\n\tRichard Genoud <richard.genoud@gmail.com>,\n\tGreg Kroah-Hartman <gregkh@linuxfoundation.org>,\n\tAlan Stern <stern@rowland.harvard.edu>", "Cc": "linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,\n\tlinux-iio@vger.kernel.org, linux-mtd@lists.infradead.org,\n\tlinux-pwm@vger.kernel.org, linux-serial@vger.kernel.org,\n\tlinux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org,\n\tRomain Izard <romain.izard.pro@gmail.com>", "Subject": "[PATCH v1 01/10] clk: at91: pmc: Wait for clocks when resuming", "Date": "Fri, 8 Sep 2017 17:35:55 +0200", "Message-Id": "<20170908153604.28383-2-romain.izard.pro@gmail.com>", "X-Mailer": "git-send-email 2.11.0", "In-Reply-To": "<20170908153604.28383-1-romain.izard.pro@gmail.com>", "References": "<20170908153604.28383-1-romain.izard.pro@gmail.com>", "Sender": "linux-pwm-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<linux-pwm.vger.kernel.org>", "X-Mailing-List": "linux-pwm@vger.kernel.org" }, "content": "Wait for the syncronization of all clocks when resuming, not only the\nUPLL clock. Do not use regmap_read_poll_timeout, as it will call BUG()\nwhen interrupts are masked, which is the case in here.\n\nSigned-off-by: Romain Izard <romain.izard.pro@gmail.com>\n---\n drivers/clk/at91/pmc.c | 24 ++++++++++++++++--------\n 1 file changed, 16 insertions(+), 8 deletions(-)", "diff": "diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c\nindex 775af473fe11..5c2b26de303e 100644\n--- a/drivers/clk/at91/pmc.c\n+++ b/drivers/clk/at91/pmc.c\n@@ -107,10 +107,20 @@ static int pmc_suspend(void)\n \treturn 0;\n }\n \n+static bool pmc_ready(unsigned int mask)\n+{\n+\tunsigned int status;\n+\n+\tregmap_read(pmcreg, AT91_PMC_SR, &status);\n+\n+\treturn ((status & mask) == mask) ? 1 : 0;\n+}\n+\n static void pmc_resume(void)\n {\n-\tint i, ret = 0;\n+\tint i;\n \tu32 tmp;\n+\tu32 mask = AT91_PMC_MCKRDY | AT91_PMC_LOCKA;\n \n \tregmap_read(pmcreg, AT91_PMC_MCKR, &tmp);\n \tif (pmc_cache.mckr != tmp)\n@@ -134,13 +144,11 @@ static void pmc_resume(void)\n \t\t\t AT91_PMC_PCR_CMD);\n \t}\n \n-\tif (pmc_cache.uckr & AT91_PMC_UPLLEN) {\n-\t\tret = regmap_read_poll_timeout(pmcreg, AT91_PMC_SR, tmp,\n-\t\t\t\t\t !(tmp & AT91_PMC_LOCKU),\n-\t\t\t\t\t 10, 5000);\n-\t\tif (ret)\n-\t\t\tpr_crit(\"USB PLL didn't lock when resuming\\n\");\n-\t}\n+\tif (pmc_cache.uckr & AT91_PMC_UPLLEN)\n+\t\tmask |= AT91_PMC_LOCKU;\n+\n+\twhile (!pmc_ready(mask))\n+\t\tcpu_relax();\n }\n \n static struct syscore_ops pmc_syscore_ops = {\n", "prefixes": [ "v1", "01/10" ] }