From mboxrd@z Thu Jan 1 00:00:00 1970 From: Viresh Kumar Subject: [PATCH V2 11/12] PM / OPP: Simplify dev_pm_opp_get_max_volt_latency() Date: Mon, 23 Jan 2017 10:11:51 +0530 Message-ID: <36bd3a626e3949ed693fe267d27639403def66cd.1485146406.git.viresh.kumar@linaro.org> References: Return-path: Received: from mail-pg0-f42.google.com ([74.125.83.42]:36542 "EHLO mail-pg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750744AbdAWEmk (ORCPT ); Sun, 22 Jan 2017 23:42:40 -0500 Received: by mail-pg0-f42.google.com with SMTP id t6so41351610pgt.3 for ; Sun, 22 Jan 2017 20:42:40 -0800 (PST) In-Reply-To: In-Reply-To: References: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Rafael Wysocki , Viresh Kumar , Nishanth Menon , Stephen Boyd Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Vincent Guittot , Viresh Kumar dev_pm_opp_get_max_volt_latency() calls _find_opp_table() two times effectively. Merge _get_regulator_count() into dev_pm_opp_get_max_volt_latency() to avoid that. Signed-off-by: Viresh Kumar Reviewed-by: Stephen Boyd --- drivers/base/power/opp/core.c | 34 +++++++++------------------------- 1 file changed, 9 insertions(+), 25 deletions(-) diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c index f54ac2484723..541d32c00cbc 100644 --- a/drivers/base/power/opp/core.c +++ b/drivers/base/power/opp/core.c @@ -170,22 +170,6 @@ unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev) } EXPORT_SYMBOL_GPL(dev_pm_opp_get_max_clock_latency); -static int _get_regulator_count(struct device *dev) -{ - struct opp_table *opp_table; - int count; - - opp_table = _find_opp_table(dev); - if (IS_ERR(opp_table)) - return 0; - - count = opp_table->regulator_count; - - dev_pm_opp_put_opp_table(opp_table); - - return count; -} - /** * dev_pm_opp_get_max_volt_latency() - Get max voltage latency in nanoseconds * @dev: device for which we do this operation @@ -204,24 +188,24 @@ unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev) unsigned long max; } *uV; - count = _get_regulator_count(dev); + opp_table = _find_opp_table(dev); + if (IS_ERR(opp_table)) + return 0; + + count = opp_table->regulator_count; /* Regulator may not be required for the device */ if (!count) - return 0; + goto put_opp_table; regulators = kmalloc_array(count, sizeof(*regulators), GFP_KERNEL); if (!regulators) - return 0; + goto put_opp_table; uV = kmalloc_array(count, sizeof(*uV), GFP_KERNEL); if (!uV) goto free_regulators; - opp_table = _find_opp_table(dev); - if (IS_ERR(opp_table)) - goto free_uV; - memcpy(regulators, opp_table->regulators, count * sizeof(*regulators)); mutex_lock(&opp_table->lock); @@ -242,7 +226,6 @@ unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev) } mutex_unlock(&opp_table->lock); - dev_pm_opp_put_opp_table(opp_table); /* * The caller needs to ensure that opp_table (and hence the regulator) @@ -254,10 +237,11 @@ unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev) latency_ns += ret * 1000; } -free_uV: kfree(uV); free_regulators: kfree(regulators); +put_opp_table: + dev_pm_opp_put_opp_table(opp_table); return latency_ns; } -- 2.7.1.410.g6faf27b