linux-kernel - [PATCH V3 3/4] opp: Split out _opp_set_rate

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Message-Id: <5a0183fa0b61cf70839fa90aa70f79e33ab4f60a.1597909885.git.viresh.kumar@linaro.org>
Date:   Thu, 20 Aug 2020 13:26:33 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     rnayak@...eaurora.org, Viresh Kumar <vireshk@...nel.org>,
        Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>, sibis@...eaurora.org,
        sbhanu@...eaurora.org, linux-kernel@...r.kernel.org
Subject: [PATCH V3 3/4] opp: Split out _opp_set_rate_zero()

Create separate routine _opp_set_rate_zero() to handle !target_freq
case.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/opp/core.c | 52 ++++++++++++++++++++++++++--------------------
 1 file changed, 29 insertions(+), 23 deletions(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 0b437d483b75..4edd2c3d6d91 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -860,6 +860,34 @@ int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_set_bw);
 
+static int _opp_set_rate_zero(struct device *dev, struct opp_table *opp_table)
+{
+	int ret;
+
+	if (!opp_table->enabled)
+		return 0;
+
+	/*
+	 * Some drivers need to support cases where some platforms may
+	 * have OPP table for the device, while others don't and
+	 * opp_set_rate() just needs to behave like clk_set_rate().
+	 */
+	if (!_get_opp_count(opp_table))
+		return 0;
+
+	ret = _set_opp_bw(opp_table, NULL, dev, true);
+	if (ret)
+		return ret;
+
+	if (opp_table->regulators)
+		regulator_disable(opp_table->regulators[0]);
+
+	ret = _set_required_opps(dev, opp_table, NULL);
+
+	opp_table->enabled = false;
+	return ret;
+}
+
 /**
  * dev_pm_opp_set_rate() - Configure new OPP based on frequency
  * @dev:	 device for which we do this operation
@@ -886,29 +914,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
 	}
 
 	if (unlikely(!target_freq)) {
-		ret = 0;
-
-		if (!opp_table->enabled)
-			goto put_opp_table;
-
-		/*
-		 * Some drivers need to support cases where some platforms may
-		 * have OPP table for the device, while others don't and
-		 * opp_set_rate() just needs to behave like clk_set_rate().
-		 */
-		if (!_get_opp_count(opp_table))
-			goto put_opp_table;
-
-		ret = _set_opp_bw(opp_table, NULL, dev, true);
-		if (ret)
-			goto put_opp_table;
-
-		if (opp_table->regulators)
-			regulator_disable(opp_table->regulators[0]);
-
-		ret = _set_required_opps(dev, opp_table, NULL);
-
-		opp_table->enabled = false;
+		ret = _opp_set_rate_zero(dev, opp_table);
 		goto put_opp_table;
 	}
 
-- 
2.25.0.rc1.19.g042ed3e048af