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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2017-02-10 15:30:29 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-02-12 14:55:08 -0800
commitf7bf6f58675a76c08e6eee7fa5c264884eb5c599 (patch)
treef388e4c8c4799286b85f471326422237ed1a0e7f /drivers/input
parent449aa83e69ff10d77fe088eadacafe1e97937c14 (diff)
downloadlinux-f7bf6f58675a76c08e6eee7fa5c264884eb5c599.tar.bz2
Input: tsc2004/5 - fix regulator handling
In case of an optional regulator missing, regulator core will return ERR_PTR(-ENOENT) and not NULL, so the check for missing regulator is incorrect. Also, the regulator is not optional, it may simply be missing from platform description, so let's use devm_regulator_get() and rely on regulator core to give us dummy supply when real one is not available. Fixes: d257f2980feb ("Input: tsc2005 - convert to gpiod") Acked-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/touchscreen/tsc200x-core.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/input/touchscreen/tsc200x-core.c b/drivers/input/touchscreen/tsc200x-core.c
index b7059ed8872e..1c14a38e3748 100644
--- a/drivers/input/touchscreen/tsc200x-core.c
+++ b/drivers/input/touchscreen/tsc200x-core.c
@@ -527,10 +527,10 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
return error;
}
- ts->vio = devm_regulator_get_optional(dev, "vio");
+ ts->vio = devm_regulator_get(dev, "vio");
if (IS_ERR(ts->vio)) {
error = PTR_ERR(ts->vio);
- dev_err(dev, "vio regulator missing (%d)", error);
+ dev_err(dev, "error acquiring vio regulator: %d", error);
return error;
}
@@ -587,12 +587,9 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
return error;
}
- /* enable regulator for DT */
- if (ts->vio) {
- error = regulator_enable(ts->vio);
- if (error)
- return error;
- }
+ error = regulator_enable(ts->vio);
+ if (error)
+ return error;
dev_set_drvdata(dev, ts);
error = sysfs_create_group(&dev->kobj, &tsc200x_attr_group);
@@ -615,8 +612,7 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
err_remove_sysfs:
sysfs_remove_group(&dev->kobj, &tsc200x_attr_group);
disable_regulator:
- if (ts->vio)
- regulator_disable(ts->vio);
+ regulator_disable(ts->vio);
return error;
}
EXPORT_SYMBOL_GPL(tsc200x_probe);
@@ -627,8 +623,7 @@ int tsc200x_remove(struct device *dev)
sysfs_remove_group(&dev->kobj, &tsc200x_attr_group);
- if (ts->vio)
- regulator_disable(ts->vio);
+ regulator_disable(ts->vio);
return 0;
}