From 466affa06703d5668b06b25fe34942a784506b62 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Wed, 21 Nov 2018 10:13:16 +0000 Subject: [PATCH] regulator: wm8994: Don't use devres for enable GPIOs The regulator core takes over managing the lifetime of the enable GPIO once the regulator is registered. As such we shouldn't register the enable GPIO using devm, or it will be freed twice. Reported-by: Marek Szyprowski Signed-off-by: Charles Keepax Tested-by: Marek Szyprowski Signed-off-by: Mark Brown --- drivers/regulator/wm8994-regulator.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/regulator/wm8994-regulator.c b/drivers/regulator/wm8994-regulator.c index d7fec533c403..46e6b4ee1491 100644 --- a/drivers/regulator/wm8994-regulator.c +++ b/drivers/regulator/wm8994-regulator.c @@ -147,11 +147,14 @@ static int wm8994_ldo_probe(struct platform_device *pdev) config.regmap = wm8994->regmap; config.init_data = &ldo->init_data; - /* Look up LDO enable GPIO from the parent device node */ - gpiod = devm_gpiod_get_optional(pdev->dev.parent, - id ? "wlf,ldo2ena" : "wlf,ldo1ena", - GPIOD_OUT_LOW | - GPIOD_FLAGS_BIT_NONEXCLUSIVE); + /* + * Look up LDO enable GPIO from the parent device node, we don't + * use devm because the regulator core will free the GPIO + */ + gpiod = gpiod_get_optional(pdev->dev.parent, + id ? "wlf,ldo2ena" : "wlf,ldo1ena", + GPIOD_OUT_LOW | + GPIOD_FLAGS_BIT_NONEXCLUSIVE); if (IS_ERR(gpiod)) return PTR_ERR(gpiod); config.ena_gpiod = gpiod; @@ -184,6 +187,7 @@ static int wm8994_ldo_probe(struct platform_device *pdev) return 0; err: + gpiod_put(gpiod); return ret; }