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[109.252.192.57]) by smtp.gmail.com with ESMTPSA id u5sm655596lff.78.2020.12.17.10.07.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Dec 2020 10:07:41 -0800 (PST) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Mark Brown , Liam Girdwood , Ulf Hansson , Mauro Carvalho Chehab , Rob Herring , Peter Geis , Nicolas Chauvet , Krzysztof Kozlowski , "Rafael J. Wysocki" , Kevin Hilman , Peter De Schrijver , Viresh Kumar , Stephen Boyd , Michael Turquette Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH v2 19/48] opp: Fix adding OPP entries in a wrong order if rate is unavailable Date: Thu, 17 Dec 2020 21:06:09 +0300 Message-Id: <20201217180638.22748-20-digetx@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201217180638.22748-1-digetx@gmail.com> References: <20201217180638.22748-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fix adding OPP entries in a wrong (opposite) order if OPP rate is unavailable. The OPP comparison is erroneously skipped if OPP rate is missing, thus OPPs are left unsorted. Signed-off-by: Dmitry Osipenko --- drivers/opp/core.c | 23 ++++++++++++----------- drivers/opp/opp.h | 2 +- 2 files changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 34f7e530d941..5c7f130a8de2 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1531,9 +1531,10 @@ static bool _opp_supported_by_regulators(struct dev_pm_opp *opp, return true; } -int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2) +int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2, + bool rate_not_available) { - if (opp1->rate != opp2->rate) + if (!rate_not_available && opp1->rate != opp2->rate) return opp1->rate < opp2->rate ? -1 : 1; if (opp1->bandwidth && opp2->bandwidth && opp1->bandwidth[0].peak != opp2->bandwidth[0].peak) @@ -1545,7 +1546,8 @@ int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2) static int _opp_is_duplicate(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table, - struct list_head **head) + struct list_head **head, + bool rate_not_available) { struct dev_pm_opp *opp; int opp_cmp; @@ -1559,13 +1561,13 @@ static int _opp_is_duplicate(struct device *dev, struct dev_pm_opp *new_opp, * loop. */ list_for_each_entry(opp, &opp_table->opp_list, node) { - opp_cmp = _opp_compare_key(new_opp, opp); + opp_cmp = _opp_compare_key(new_opp, opp, rate_not_available); if (opp_cmp > 0) { *head = &opp->node; continue; } - if (opp_cmp < 0) + if (opp_cmp < 0 || rate_not_available) return 0; /* Duplicate OPPs */ @@ -1601,12 +1603,11 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, mutex_lock(&opp_table->lock); head = &opp_table->opp_list; - if (likely(!rate_not_available)) { - ret = _opp_is_duplicate(dev, new_opp, opp_table, &head); - if (ret) { - mutex_unlock(&opp_table->lock); - return ret; - } + ret = _opp_is_duplicate(dev, new_opp, opp_table, &head, + rate_not_available); + if (ret) { + mutex_unlock(&opp_table->lock); + return ret; } list_add(&new_opp->node, head); diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index 4ced7ffa8158..6f5be6c72f13 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -219,7 +219,7 @@ struct opp_table *_find_opp_table(struct device *dev); struct opp_device *_add_opp_dev(const struct device *dev, struct opp_table *opp_table); struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table); void _opp_free(struct dev_pm_opp *opp); -int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2); +int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2, bool rate_not_available); int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table, bool rate_not_available); int _opp_add_v1(struct opp_table *opp_table, struct device *dev, unsigned long freq, long u_volt, bool dynamic); void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, int last_cpu); -- 2.29.2