[PATCH v3 1/3] gnss: ubx: use new helper to remove open coded regulator handling

From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-renesas-soc@vger.kernel.org
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Johan Hovold <johan@kernel.org>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3 1/3] gnss: ubx: use new helper to remove open coded regulator handling
Date: Thu, 21 Sep 2023 15:31:59 +0200	[thread overview]
Message-ID: <20230921133202.5828-2-wsa+renesas@sang-engineering.com> (raw)
In-Reply-To: <20230921133202.5828-1-wsa+renesas@sang-engineering.com>

v_bckp shall always be enabled as long as the device exists. We now have
a regulator helper for that, use it.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 drivers/gnss/ubx.c | 26 ++++----------------------
 1 file changed, 4 insertions(+), 22 deletions(-)

diff --git a/drivers/gnss/ubx.c b/drivers/gnss/ubx.c
index c951be202ca2..9b76b101ba5e 100644
--- a/drivers/gnss/ubx.c
+++ b/drivers/gnss/ubx.c
@@ -17,7 +17,6 @@
 #include "serial.h"
 
 struct ubx_data {
-	struct regulator *v_bckp;
 	struct regulator *vcc;
 };
 
@@ -87,30 +86,16 @@ static int ubx_probe(struct serdev_device *serdev)
 		goto err_free_gserial;
 	}
 
-	data->v_bckp = devm_regulator_get_optional(&serdev->dev, "v-bckp");
-	if (IS_ERR(data->v_bckp)) {
-		ret = PTR_ERR(data->v_bckp);
-		if (ret == -ENODEV)
-			data->v_bckp = NULL;
-		else
-			goto err_free_gserial;
-	}
-
-	if (data->v_bckp) {
-		ret = regulator_enable(data->v_bckp);
-		if (ret)
-			goto err_free_gserial;
-	}
+	ret = devm_regulator_get_enable_optional(&serdev->dev, "v-bckp");
+	if (ret < 0 && ret != -ENODEV)
+		goto err_free_gserial;
 
 	ret = gnss_serial_register(gserial);
 	if (ret)
-		goto err_disable_v_bckp;
+		goto err_free_gserial;
 
 	return 0;
 
-err_disable_v_bckp:
-	if (data->v_bckp)
-		regulator_disable(data->v_bckp);
 err_free_gserial:
 	gnss_serial_free(gserial);
 
@@ -120,11 +105,8 @@ static int ubx_probe(struct serdev_device *serdev)
 static void ubx_remove(struct serdev_device *serdev)
 {
 	struct gnss_serial *gserial = serdev_device_get_drvdata(serdev);
-	struct ubx_data *data = gnss_serial_get_drvdata(gserial);
 
 	gnss_serial_deregister(gserial);
-	if (data->v_bckp)
-		regulator_disable(data->v_bckp);
 	gnss_serial_free(gserial);
 }
 
-- 
2.35.1

