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authorCharles Keepax <ckeepax@opensource.cirrus.com>2018-11-21 10:13:16 +0000
committerMark Brown <broonie@kernel.org>2018-11-21 12:43:37 +0000
commit466affa06703d5668b06b25fe34942a784506b62 (patch)
treeb0ec459cb2d16ece373e8ed36bd6f01e94a419aa /drivers/regulator
parent7b51a821211eb6217f60962c31f30cb73e30a0c7 (diff)
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 <m.szyprowski@samsung.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/wm8994-regulator.c14
1 files 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;
}