linux-kernel - Applied "regulator: 88pm800: Update driver to use devm_regulator

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Message-Id: <E1ZFqHt-0001vF-E4@finisterre>
Date:	Thu, 16 Jul 2015 22:01:49 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>,
	Mark Brown <broonie@...nel.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Applied "regulator: 88pm800: Update driver to use devm_regulator_register fn" to the regulator tree

The patch

   regulator: 88pm800: Update driver to use devm_regulator_register fn

has been applied to the regulator tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From a07d94a54b93d94d8cb990ffe018c595cfb94662 Mon Sep 17 00:00:00 2001
From: Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
Date: Thu, 16 Jul 2015 23:46:55 +0530
Subject: [PATCH] regulator: 88pm800: Update driver to use
 devm_regulator_register fn

This patch replaces standard regulator_register with
devm_regulator_register() fn, as using devm_regulator_register() fn
simplifies the driver return/exit path.

As part of this update, patch also cleanups up all unnecessary changes
which is result of this patch -

  - Remove _remove() fn, as devm_ variant takes care of it.
  - Remove pm800_regulators.regulators[] field, as it was only
    needed during cleanup, so we no longer need this.
    This also saved some amount of memory.

Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/regulator/88pm800.c | 27 ++++++---------------------
 1 file changed, 6 insertions(+), 21 deletions(-)

diff --git a/drivers/regulator/88pm800.c b/drivers/regulator/88pm800.c
index 11f7ab2..3b37170 100644
--- a/drivers/regulator/88pm800.c
+++ b/drivers/regulator/88pm800.c
@@ -78,7 +78,6 @@ struct pm800_regulator_info {
 };
 
 struct pm800_regulators {
-	struct regulator_dev *regulators[PM800_ID_RG_MAX];
 	struct pm80x_chip *chip;
 	struct regmap *map;
 };
@@ -318,6 +317,8 @@ static int pm800_regulator_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, pm800_data);
 
 	for (i = 0; i < PM800_ID_RG_MAX; i++) {
+		struct regulator_dev *regulator;
+
 		if (!pdata || pdata->num_regulators == 0)
 			init_data = pm800_regulator_matches[i].init_data;
 		else
@@ -331,16 +332,12 @@ static int pm800_regulator_probe(struct platform_device *pdev)
 		config.regmap = pm800_data->map;
 		config.of_node = pm800_regulator_matches[i].of_node;
 
-		pm800_data->regulators[i] =
-				regulator_register(&info->desc, &config);
-		if (IS_ERR(pm800_data->regulators[i])) {
-			ret = PTR_ERR(pm800_data->regulators[i]);
+		regulator = devm_regulator_register(&pdev->dev,
+					&info->desc, &config);
+		if (IS_ERR(regulator)) {
+			ret = PTR_ERR(regulator);
 			dev_err(&pdev->dev, "Failed to register %s\n",
 				info->desc.name);
-
-			while (--i >= 0)
-				regulator_unregister(pm800_data->regulators[i]);
-
 			return ret;
 		}
 	}
@@ -348,23 +345,11 @@ static int pm800_regulator_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int pm800_regulator_remove(struct platform_device *pdev)
-{
-	struct pm800_regulators *pm800_data = platform_get_drvdata(pdev);
-	int i;
-
-	for (i = 0; i < PM800_ID_RG_MAX; i++)
-		regulator_unregister(pm800_data->regulators[i]);
-
-	return 0;
-}
-
 static struct platform_driver pm800_regulator_driver = {
 	.driver		= {
 		.name	= "88pm80x-regulator",
 	},
 	.probe		= pm800_regulator_probe,
-	.remove		= pm800_regulator_remove,
 };
 
 module_platform_driver(pm800_regulator_driver);
-- 
2.1.4

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