linux-kernel - [PATCH 14/15 v3] regulator: tps65090: Hand over GPIO to regulator core

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Date:   Wed,  5 Dec 2018 13:47:20 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 14/15 v3] regulator: tps65090: Hand over GPIO to regulator core

The GPIO descriptors used by the TPS65090 driver are retrieved
during probe() and it is really helpful to have those under
devres management because of all the errorpaths in the
intialization.

Using the new dev_gpiod_unhinge() call we can remove the
devres management of the descriptor right before handing
it over to the regulators core.

Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
ChangeLog v2->v3:
- Resending.
ChangeLog v1->v2:
- New patch handling this drivers GPIO descriptors properly.
---
 drivers/regulator/tps65090-regulator.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
index db714d5edafc..0614551796a1 100644
--- a/drivers/regulator/tps65090-regulator.c
+++ b/drivers/regulator/tps65090-regulator.c
@@ -480,6 +480,12 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
 		else
 			config.of_node = NULL;
 
+		/*
+		 * Hand the GPIO descriptor management over to the regulator
+		 * core, remove it from devres management.
+		 */
+		if (config.ena_gpiod)
+			devm_gpiod_unhinge(&pdev->dev, config.ena_gpiod);
 		rdev = devm_regulator_register(&pdev->dev, ri->desc, &config);
 		if (IS_ERR(rdev)) {
 			dev_err(&pdev->dev, "failed to register regulator %s\n",
-- 
2.19.2