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GET /api/patches/814290/?format=api
{ "id": 814290, "url": "http://patchwork.ozlabs.org/api/patches/814290/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20170915140411.31716-2-romain.izard.pro@gmail.com/", "project": { "id": 3, "url": "http://patchwork.ozlabs.org/api/projects/3/?format=api", "name": "Linux MTD development", "link_name": "linux-mtd", "list_id": "linux-mtd.lists.infradead.org", "list_email": "linux-mtd@lists.infradead.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170915140411.31716-2-romain.izard.pro@gmail.com>", "list_archive_url": null, "date": "2017-09-15T14:04:03", "name": "[v2,1/9] clk: at91: pmc: Wait for clocks when resuming", "commit_ref": null, "pull_url": null, "state": "not-applicable", "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-mtd/patch/20170915140411.31716-2-romain.izard.pro@gmail.com/mbox/", "series": [ { "id": 3316, "url": "http://patchwork.ozlabs.org/api/series/3316/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/list/?series=3316", "date": "2017-09-15T14:04:02", "name": "Various patches for SAMA5D2 backup mode", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/3316/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/814290/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/814290/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org; 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\n\tFri, 15 Sep 2017 07:04:45 -0700 (PDT)", "From": "Romain Izard <romain.izard.pro@gmail.com>", "To": "Nicolas Ferre <nicolas.ferre@microchip.com>,\n\tAlexandre Belloni <alexandre.belloni@free-electrons.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\tWenyou Yang <wenyou.yang@atmel.com>, Josh 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>", "Subject": "[PATCH v2 1/9] clk: at91: pmc: Wait for clocks when resuming", "Date": "Fri, 15 Sep 2017 16:04:03 +0200", "Message-Id": "<20170915140411.31716-2-romain.izard.pro@gmail.com>", "X-Mailer": "git-send-email 2.11.0", "In-Reply-To": "<20170915140411.31716-1-romain.izard.pro@gmail.com>", "References": "<20170915140411.31716-1-romain.izard.pro@gmail.com>", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20170915_070505_167118_754A2E23 ", "X-CRM114-Status": "GOOD ( 12.51 )", "X-Spam-Score": "-2.0 (--)", "X-Spam-Report": "SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-2.0 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail\n\tprovider (romain.izard.pro[at]gmail.com)\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]\n\t-0.1 DKIM_VALID Message has at least one valid DKIM or DK signature\n\t0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n\tnot necessarily valid\n\t-0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n\tauthor's domain", "X-BeenThere": "linux-mtd@lists.infradead.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-mtd/>", "List-Post": "<mailto:linux-mtd@lists.infradead.org>", "List-Help": "<mailto:linux-mtd-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>", "Cc": "linux-pwm@vger.kernel.org, linux-usb@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,\n\tlinux-serial@vger.kernel.org, Romain Izard <romain.izard.pro@gmail.com>, \n\tlinux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-mtd\" <linux-mtd-bounces@lists.infradead.org>", "Errors-To": "linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.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": [ "v2", "1/9" ] }