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Date:   Tue, 11 Aug 2020 03:07:40 +0200
Message-Id: <eb061133ecd1dd856ddff2dfe7a891e00a56e3f0.1597107682.git.mirq-linux@rere.qmqm.pl>
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From:   =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= <mirq-linux@rere.qmqm.pl>
Subject: [PATCH 6/7] regulator: cleanup regulator_ena_gpio_free()
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To:     Dmitry Osipenko <digetx@gmail.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>
Cc:     linux-kernel@vger.kernel.org, Vladimir Zapolskiy <vz@mleia.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Since only regulator_ena_gpio_request() allocates rdev->ena_pin, and it
guarantees that same gpiod gets same pin structure, it is enough to
compare just the pointers. Also we know there can be only one matching
entry on the list. Rework the code take advantage of the facts.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
---
 drivers/regulator/core.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a9ff2ad55ee7..b85ec974944e 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2260,19 +2260,19 @@ static void regulator_ena_gpio_free(struct regulator_dev *rdev)
 
 	/* Free the GPIO only in case of no use */
 	list_for_each_entry_safe(pin, n, &regulator_ena_gpio_list, list) {
-		if (pin->gpiod == rdev->ena_pin->gpiod) {
-			if (pin->request_count <= 1) {
-				pin->request_count = 0;
-				gpiod_put(pin->gpiod);
-				list_del(&pin->list);
-				kfree(pin);
-				rdev->ena_pin = NULL;
-				return;
-			} else {
-				pin->request_count--;
-			}
-		}
+		if (pin != rdev->ena_pin)
+			continue;
+
+		if (--pin->request_count)
+			break;
+
+		gpiod_put(pin->gpiod);
+		list_del(&pin->list);
+		kfree(pin);
+		break;
 	}
+
+	rdev->ena_pin = NULL;
 }
 
 /**
-- 
2.20.1