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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-02-10 15:30:29 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-02-12 14:55:08 -0800 |
| commit | f7bf6f58675a76c08e6eee7fa5c264884eb5c599 (patch) | |
| tree | f388e4c8c4799286b85f471326422237ed1a0e7f /drivers/input/touchscreen/tsc200x-core.c | |
| parent | Input: tsc2005 - add OF device table (diff) | |
| download | linux-dev-f7bf6f58675a76c08e6eee7fa5c264884eb5c599.tar.xz linux-dev-f7bf6f58675a76c08e6eee7fa5c264884eb5c599.zip | |
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/touchscreen/tsc200x-core.c')
| -rw-r--r-- | drivers/input/touchscreen/tsc200x-core.c | 19 |
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; } |