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Message-Id: <20200728091057.10.Ibe84fae61cd914c116e6d59ffeb644f1cbecd601@changeid>
Date: Tue, 28 Jul 2020 09:12:53 -0600
From: Daniel Campello <campello@...omium.org>
To: LKML <devicetree@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>
Cc: Jonathan Cameron <jic23@...nel.org>,
Daniel Campello <campello@...omium.org>,
Douglas Anderson <dianders@...omium.org>,
Enrico Granata <egranata@...omium.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
Stephen Boyd <swboyd@...omium.org>, linux-iio@...r.kernel.org
Subject: [PATCH 10/15] iio: sx9310: Simplify error return handling
Checks for non-zero return values to signal error conditions.
Signed-off-by: Daniel Campello <campello@...omium.org>
---
drivers/iio/proximity/sx9310.c | 52 +++++++++++++++++-----------------
1 file changed, 26 insertions(+), 26 deletions(-)
diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
index 31234691a31abf..051c6515e62c18 100644
--- a/drivers/iio/proximity/sx9310.c
+++ b/drivers/iio/proximity/sx9310.c
@@ -338,7 +338,7 @@ static int sx9310_read_prox_data(struct sx9310_data *data,
int ret;
ret = regmap_write(data->regmap, SX9310_REG_SENSOR_SEL, chan->channel);
- if (ret < 0)
+ if (ret)
return ret;
return regmap_bulk_read(data->regmap, chan->address, val, sizeof(*val));
@@ -354,7 +354,7 @@ static int sx9310_wait_for_sample(struct sx9310_data *data)
unsigned int val;
ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0, &val);
- if (ret < 0)
+ if (ret)
return ret;
val = (val & SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK) >>
@@ -368,13 +368,13 @@ static int sx9310_wait_for_sample(struct sx9310_data *data)
static int sx9310_read_proximity(struct sx9310_data *data,
const struct iio_chan_spec *chan, int *val)
{
- int ret = 0;
+ int ret;
__be16 rawval;
mutex_lock(&data->mutex);
ret = sx9310_get_read_channel(data, chan->channel);
- if (ret < 0)
+ if (ret)
goto out;
if (data->client->irq) {
@@ -394,11 +394,11 @@ static int sx9310_read_proximity(struct sx9310_data *data,
mutex_lock(&data->mutex);
- if (ret < 0)
+ if (ret)
goto out_disable_irq;
ret = sx9310_read_prox_data(data, chan, &rawval);
- if (ret < 0)
+ if (ret)
goto out_disable_irq;
*val = sign_extend32(be16_to_cpu(rawval),
@@ -411,7 +411,7 @@ static int sx9310_read_proximity(struct sx9310_data *data,
}
ret = sx9310_put_read_channel(data, chan->channel);
- if (ret < 0)
+ if (ret)
goto out;
mutex_unlock(&data->mutex);
@@ -434,7 +434,7 @@ static int sx9310_read_samp_freq(struct sx9310_data *data, int *val, int *val2)
unsigned int regval;
int ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0, ®val);
- if (ret < 0)
+ if (ret)
return ret;
regval = (regval & SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK) >>
@@ -535,7 +535,7 @@ static void sx9310_push_events(struct iio_dev *indio_dev)
/* Read proximity state on all channels */
ret = regmap_read(data->regmap, SX9310_REG_STAT0, &val);
- if (ret < 0) {
+ if (ret) {
dev_err(&data->client->dev, "i2c transfer error in irq\n");
return;
}
@@ -570,7 +570,7 @@ static irqreturn_t sx9310_irq_thread_handler(int irq, void *private)
mutex_lock(&data->mutex);
ret = regmap_read(data->regmap, SX9310_REG_IRQ_SRC, &val);
- if (ret < 0) {
+ if (ret) {
dev_err(&data->client->dev, "i2c transfer error in irq\n");
goto out;
}
@@ -613,20 +613,20 @@ static int sx9310_write_event_config(struct iio_dev *indio_dev,
mutex_lock(&data->mutex);
if (state) {
ret = sx9310_get_event_channel(data, chan->channel);
- if (ret < 0)
+ if (ret)
goto out_unlock;
if (!(data->chan_event & ~BIT(chan->channel))) {
ret = sx9310_enable_irq(data, eventirq);
- if (ret < 0)
+ if (ret)
sx9310_put_event_channel(data, chan->channel);
}
} else {
ret = sx9310_put_event_channel(data, chan->channel);
- if (ret < 0)
+ if (ret)
goto out_unlock;
if (!data->chan_event) {
ret = sx9310_disable_irq(data, eventirq);
- if (ret < 0)
+ if (ret)
sx9310_get_event_channel(data, chan->channel);
}
}
@@ -665,7 +665,7 @@ static int sx9310_set_trigger_state(struct iio_trigger *trig, bool state)
ret = sx9310_enable_irq(data, SX9310_CONVDONE_IRQ);
else if (!data->chan_read)
ret = sx9310_disable_irq(data, SX9310_CONVDONE_IRQ);
- if (ret < 0)
+ if (ret)
goto out;
data->trigger_enabled = state;
@@ -694,7 +694,7 @@ static irqreturn_t sx9310_trigger_handler(int irq, void *private)
indio_dev->masklength) {
ret = sx9310_read_prox_data(data, &indio_dev->channels[bit],
&val);
- if (ret < 0)
+ if (ret)
goto out;
data->buffer[i++] = val;
@@ -801,13 +801,13 @@ static int sx9310_init_compensation(struct iio_dev *indio_dev)
unsigned int ctrl0;
ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0, &ctrl0);
- if (ret < 0)
+ if (ret)
return ret;
/* run the compensation phase on all channels */
ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0,
ctrl0 | SX9310_REG_PROX_CTRL0_SENSOREN_MASK);
- if (ret < 0)
+ if (ret)
return ret;
ret = regmap_read_poll_timeout(data->regmap, SX9310_REG_STAT1, val,
@@ -833,21 +833,21 @@ static int sx9310_init_device(struct iio_dev *indio_dev)
unsigned int i, val;
ret = regmap_write(data->regmap, SX9310_REG_RESET, SX9310_SOFT_RESET);
- if (ret < 0)
+ if (ret)
return ret;
usleep_range(1000, 2000); /* power-up time is ~1ms. */
/* Clear reset interrupt state by reading SX9310_REG_IRQ_SRC. */
ret = regmap_read(data->regmap, SX9310_REG_IRQ_SRC, &val);
- if (ret < 0)
+ if (ret)
return ret;
/* Program some sane defaults. */
for (i = 0; i < ARRAY_SIZE(sx9310_default_regs); i++) {
initval = &sx9310_default_regs[i];
ret = regmap_write(data->regmap, initval->reg, initval->def);
- if (ret < 0)
+ if (ret)
return ret;
}
@@ -901,14 +901,14 @@ static int sx9310_probe(struct i2c_client *client)
return PTR_ERR(data->regmap);
ret = regmap_read(data->regmap, SX9310_REG_WHOAMI, &data->whoami);
- if (ret < 0) {
+ if (ret) {
dev_err(&client->dev, "error in reading WHOAMI register: %d",
ret);
return ret;
}
ret = sx9310_set_indio_dev_name(&client->dev, indio_dev, data->whoami);
- if (ret < 0)
+ if (ret)
return ret;
ACPI_COMPANION_SET(&indio_dev->dev, ACPI_COMPANION(&client->dev));
@@ -920,7 +920,7 @@ static int sx9310_probe(struct i2c_client *client)
i2c_set_clientdata(client, indio_dev);
ret = sx9310_init_device(indio_dev);
- if (ret < 0)
+ if (ret)
return ret;
if (client->irq) {
@@ -929,7 +929,7 @@ static int sx9310_probe(struct i2c_client *client)
sx9310_irq_thread_handler,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"sx9310_event", indio_dev);
- if (ret < 0)
+ if (ret)
return ret;
data->trig =
@@ -951,7 +951,7 @@ static int sx9310_probe(struct i2c_client *client)
iio_pollfunc_store_time,
sx9310_trigger_handler,
&sx9310_buffer_setup_ops);
- if (ret < 0)
+ if (ret)
return ret;
return devm_iio_device_register(&client->dev, indio_dev);
--
2.28.0.rc0.142.g3c755180ce-goog
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