linux-kernel - [PATCH 1/2] opp: Reorder the code for !target

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Date:   Fri, 15 May 2020 13:27:20 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     k.konieczny@...sung.com, peron.clem@...il.com,
        m.szyprowski@...sung.com, 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>, broonie@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] opp: Reorder the code for !target_freq case

Reorder the code a bit to make it more readable. Add additional comment
as well.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/opp/core.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index e4f01e7771a2..dda8164fad56 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -817,15 +817,20 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
 	}
 
 	if (unlikely(!target_freq)) {
-		if (opp_table->required_opp_tables) {
-			ret = _set_required_opps(dev, opp_table, NULL);
-		} else if (!_get_opp_count(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))
 			return 0;
-		} else {
+
+		if (!opp_table->required_opp_tables) {
 			dev_err(dev, "target frequency can't be 0\n");
 			ret = -EINVAL;
 		}
 
+		ret = _set_required_opps(dev, opp_table, NULL);
 		goto put_opp_table;
 	}
 
-- 
2.25.0.rc1.19.g042ed3e048af