Re: [PATCH] iio: st: rework code style removing goto statements

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Thanks Giuseppe,

such a long time I wanted do that. :)

Just add one blank line please, it was missing also before!

Denis


On 07/21/2015 06:14 PM, Giuseppe BARBA wrote:
The scope of this patch is to remove some goto statements and its label
present into st sensors driver.

Signed-off-by: Giuseppe Barba <giuseppe.barba@xxxxxx>
---
  drivers/iio/accel/st_accel_buffer.c               |  7 +--
  drivers/iio/accel/st_accel_core.c                 |  3 +-
  drivers/iio/common/st_sensors/st_sensors_buffer.c | 29 ++++-----
  drivers/iio/common/st_sensors/st_sensors_core.c   | 75 ++++++++++-------------
  drivers/iio/common/st_sensors/st_sensors_i2c.c    |  5 +-
  drivers/iio/common/st_sensors/st_sensors_spi.c    | 10 ++-
  drivers/iio/gyro/st_gyro_buffer.c                 |  7 +--
  drivers/iio/gyro/st_gyro_core.c                   |  5 +-
  drivers/iio/magnetometer/st_magn_buffer.c         | 20 ++----
  drivers/iio/magnetometer/st_magn_core.c           |  5 +-
  drivers/iio/magnetometer/st_magn_i2c.c            |  6 +-
  drivers/iio/magnetometer/st_magn_spi.c            |  6 +-
  drivers/iio/pressure/st_pressure_buffer.c         | 20 ++----
  drivers/iio/pressure/st_pressure_core.c           | 13 ++--
  drivers/iio/pressure/st_pressure_spi.c            |  6 +-
  15 files changed, 77 insertions(+), 140 deletions(-)

diff --git a/drivers/iio/accel/st_accel_buffer.c b/drivers/iio/accel/st_accel_buffer.c
index a1e642e..21b5ac4 100644
--- a/drivers/iio/accel/st_accel_buffer.c
+++ b/drivers/iio/accel/st_accel_buffer.c
@@ -41,10 +41,8 @@ static int st_accel_buffer_postenable(struct iio_dev *indio_dev)
         struct st_sensor_data *adata = iio_priv(indio_dev);

         adata->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
-       if (adata->buffer_data == NULL) {
-               err = -ENOMEM;
-               goto allocate_memory_error;
-       }
+       if (adata->buffer_data == NULL)
+               return -ENOMEM;

         err = st_sensors_set_axis_enable(indio_dev,
                                         (u8)indio_dev->active_scan_mask[0]);
@@ -59,7 +57,6 @@ static int st_accel_buffer_postenable(struct iio_dev *indio_dev)

  st_accel_buffer_postenable_error:
         kfree(adata->buffer_data);
-allocate_memory_error:
         return err;
  }

diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index ff30f88..beea981 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -559,7 +559,7 @@ static int st_accel_read_raw(struct iio_dev *indio_dev,
         case IIO_CHAN_INFO_RAW:
                 err = st_sensors_read_info_raw(indio_dev, ch, val);
                 if (err < 0)
-                       goto read_error;
+                       break;

                 return IIO_VAL_INT;
         case IIO_CHAN_INFO_SCALE:
@@ -573,7 +573,6 @@ static int st_accel_read_raw(struct iio_dev *indio_dev,
                 return -EINVAL;
         }

-read_error:
         return err;
  }

diff --git a/drivers/iio/common/st_sensors/st_sensors_buffer.c b/drivers/iio/common/st_sensors/st_sensors_buffer.c
index e18bc67..4d1f75c 100644
--- a/drivers/iio/common/st_sensors/st_sensors_buffer.c
+++ b/drivers/iio/common/st_sensors/st_sensors_buffer.c
@@ -32,10 +32,8 @@ int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf)
                         indio_dev->channels[0].scan_type.storagebits >> 3;

         addr = kmalloc(num_data_channels, GFP_KERNEL);
-       if (!addr) {
-               len = -ENOMEM;
-               goto st_sensors_get_buffer_element_error;
-       }
+       if (!addr)
+               return -ENOMEM;

         for (i = 0; i < num_data_channels; i++) {
                 if (test_bit(i, indio_dev->active_scan_mask)) {
@@ -59,7 +57,7 @@ int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf)
                                            GFP_KERNEL);
                         if (!rx_array) {
                                 len = -ENOMEM;
-                               goto st_sensors_free_memory;
+                               break;
                         }

                         len = sdata->tf->read_multiple_byte(&sdata->tb,
@@ -68,7 +66,7 @@ int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf)
                                 rx_array, sdata->multiread_bit);
                         if (len < 0) {
                                 kfree(rx_array);
-                               goto st_sensors_free_memory;
+                               break;
                         }

                         for (i = 0; i < n * byte_for_channel; i++) {
@@ -88,16 +86,13 @@ int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf)
                 break;
         default:
                 len = -EINVAL;
-               goto st_sensors_free_memory;
+               break;
         }
-       if (len != byte_for_channel * n) {
+       if ((len > 0) && (len != byte_for_channel * n))
                 len = -EIO;
-               goto st_sensors_free_memory;
-       }

-st_sensors_free_memory:
         kfree(addr);
-st_sensors_get_buffer_element_error:
+
         return len;
  }
  EXPORT_SYMBOL(st_sensors_get_buffer_element);
@@ -110,13 +105,11 @@ irqreturn_t st_sensors_trigger_handler(int irq, void *p)
         struct st_sensor_data *sdata = iio_priv(indio_dev);

         len = st_sensors_get_buffer_element(indio_dev, sdata->buffer_data);
-       if (len < 0)
-               goto st_sensors_get_buffer_element_error;
-
-       iio_push_to_buffers_with_timestamp(indio_dev, sdata->buffer_data,
-               pf->timestamp);
+       if (len > 0)
+               iio_push_to_buffers_with_timestamp(indio_dev,
+                                                       sdata->buffer_data,
+                                                       pf->timestamp);

-st_sensors_get_buffer_element_error:
         iio_trigger_notify_done(indio_dev->trig);

         return IRQ_HANDLED;
diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c
index 2e7fdb5..c84b4f2 100644
--- a/drivers/iio/common/st_sensors/st_sensors_core.c
+++ b/drivers/iio/common/st_sensors/st_sensors_core.c
@@ -35,34 +35,32 @@ static int st_sensors_write_data_with_mask(struct iio_dev *indio_dev,

         err = sdata->tf->read_byte(&sdata->tb, sdata->dev, reg_addr, &new_data);
         if (err < 0)
-               goto st_sensors_write_data_with_mask_error;
+               return err;

         new_data = ((new_data & (~mask)) | ((data << __ffs(mask)) & mask));
-       err = sdata->tf->write_byte(&sdata->tb, sdata->dev, reg_addr, new_data);

-st_sensors_write_data_with_mask_error:
-       return err;
+       return sdata->tf->write_byte(&sdata->tb, sdata->dev, reg_addr,
+                                                               new_data);
  }

  static int st_sensors_match_odr(struct st_sensor_settings *sensor_settings,
                         unsigned int odr, struct st_sensor_odr_avl *odr_out)
  {
-       int i, ret = -EINVAL;
+       int i;

         for (i = 0; i < ST_SENSORS_ODR_LIST_MAX; i++) {
                 if (sensor_settings->odr.odr_avl[i].hz == 0)
-                       goto st_sensors_match_odr_error;
+                       break;

                 if (sensor_settings->odr.odr_avl[i].hz == odr) {
                         odr_out->hz = sensor_settings->odr.odr_avl[i].hz;
                         odr_out->value = sensor_settings->odr.odr_avl[i].value;
-                       ret = 0;
-                       break;
+
+                       return 0;
                 }
         }

-st_sensors_match_odr_error:
-       return ret;
+       return -EINVAL;
  }

  int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr)
@@ -73,7 +71,7 @@ int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr)

         err = st_sensors_match_odr(sdata->sensor_settings, odr, &odr_out);
         if (err < 0)
-               goto st_sensors_match_odr_error;
+               return err;

         if ((sdata->sensor_settings->odr.addr ==
                                         sdata->sensor_settings->pw.addr) &&
@@ -96,7 +94,6 @@ int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr)
         if (err >= 0)
                 sdata->odr = odr_out.hz;

-st_sensors_match_odr_error:
         return err;
  }
  EXPORT_SYMBOL(st_sensors_set_odr);
@@ -104,21 +101,19 @@ EXPORT_SYMBOL(st_sensors_set_odr);
  static int st_sensors_match_fs(struct st_sensor_settings *sensor_settings,
                                         unsigned int fs, int *index_fs_avl)
  {
-       int i, ret = -EINVAL;
+       int i;

         for (i = 0; i < ST_SENSORS_FULLSCALE_AVL_MAX; i++) {
                 if (sensor_settings->fs.fs_avl[i].num == 0)
-                       goto st_sensors_match_odr_error;
+                       break;

                 if (sensor_settings->fs.fs_avl[i].num == fs) {
                         *index_fs_avl = i;
-                       ret = 0;
-                       break;
+                       return 0;
                 }
         }

-st_sensors_match_odr_error:
-       return ret;
+       return -EINVAL;
  }

  static int st_sensors_set_fullscale(struct iio_dev *indio_dev, unsigned int fs)
@@ -130,22 +125,23 @@ static int st_sensors_set_fullscale(struct iio_dev *indio_dev, unsigned int fs)
                 return 0;

         err = st_sensors_match_fs(sdata->sensor_settings, fs, &i);
-       if (err < 0)
-               goto st_accel_set_fullscale_error;
+       if (err < 0) {
+               dev_err(&indio_dev->dev, "requested fullscale is not supported.\n");
+               return err;
+       }

         err = st_sensors_write_data_with_mask(indio_dev,
                                 sdata->sensor_settings->fs.addr,
                                 sdata->sensor_settings->fs.mask,
                                 sdata->sensor_settings->fs.fs_avl[i].value);
-       if (err < 0)
-               goto st_accel_set_fullscale_error;
+       if (err < 0) {
+               dev_err(&indio_dev->dev, "failed to set new fullscale.\n");
+               return err;
+       }

         sdata->current_fullscale = (struct st_sensor_fullscale_avl *)
                                         &sdata->sensor_settings->fs.fs_avl[i];
-       return err;

-st_accel_set_fullscale_error:
-       dev_err(&indio_dev->dev, "failed to set new fullscale.\n");
         return err;
  }

@@ -166,7 +162,7 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
                         err = st_sensors_match_odr(sdata->sensor_settings,
                                                         sdata->odr, &odr_out);
                         if (err < 0)
-                               goto set_enable_error;
+                               return err;

Add new space here. It was missing also before.


                         tmp_value = odr_out.value;
                         found = true;
                 }
@@ -174,7 +170,7 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
                                 sdata->sensor_settings->pw.addr,
                                 sdata->sensor_settings->pw.mask, tmp_value);
                 if (err < 0)
-                       goto set_enable_error;
+                       return err;

                 sdata->enabled = true;

@@ -186,12 +182,11 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
                                 sdata->sensor_settings->pw.mask,
                                 sdata->sensor_settings->pw.value_off);
                 if (err < 0)
-                       goto set_enable_error;
+                       return err;

                 sdata->enabled = false;
         }

-set_enable_error:
         return err;
  }
  EXPORT_SYMBOL(st_sensors_set_enable);
@@ -375,7 +370,7 @@ int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
                                 sdata->sensor_settings->drdy_irq.ig1.en_mask,
                                 (int)enable);
                 if (err < 0)
-                       goto st_accel_set_dataready_irq_error;
+                       return err;
         }

         if (sdata->drdy_int_pin == 1)
@@ -384,12 +379,9 @@ int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
                 drdy_mask = sdata->sensor_settings->drdy_irq.mask_int2;

         /* Enable/Disable the interrupt generator for data ready. */
-       err = st_sensors_write_data_with_mask(indio_dev,
+       return st_sensors_write_data_with_mask(indio_dev,
                                         sdata->sensor_settings->drdy_irq.addr,
                                         drdy_mask, (int)enable);
-
-st_accel_set_dataready_irq_error:
-       return err;
  }
  EXPORT_SYMBOL(st_sensors_set_dataready_irq);

@@ -406,13 +398,10 @@ int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale)
                 }
         }
         if (err < 0)
-               goto st_sensors_match_scale_error;
+               return err;

-       err = st_sensors_set_fullscale(indio_dev,
+       return st_sensors_set_fullscale(indio_dev,
                                 sdata->sensor_settings->fs.fs_avl[i].num);
-
-st_sensors_match_scale_error:
-       return err;
  }
  EXPORT_SYMBOL(st_sensors_set_fullscale_by_gain);

@@ -456,22 +445,22 @@ int st_sensors_read_info_raw(struct iio_dev *indio_dev,
         mutex_lock(&indio_dev->mlock);
         if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
                 err = -EBUSY;
-               goto out;
+               goto st_sensors_mutex_unlock;
         } else {
                 err = st_sensors_set_enable(indio_dev, true);
                 if (err < 0)
-                       goto out;
+                       goto st_sensors_mutex_unlock;

                 msleep((sdata->sensor_settings->bootime * 1000) / sdata->odr);
                 err = st_sensors_read_axis_data(indio_dev, ch, val);
                 if (err < 0)
-                       goto out;
+                       goto st_sensors_mutex_unlock;

                 *val = *val >> ch->scan_type.shift;

                 err = st_sensors_set_enable(indio_dev, false);
         }
-out:
+st_sensors_mutex_unlock:
         mutex_unlock(&indio_dev->mlock);

         return err;
diff --git a/drivers/iio/common/st_sensors/st_sensors_i2c.c b/drivers/iio/common/st_sensors/st_sensors_i2c.c
index 98cfee29..793d7a8 100644
--- a/drivers/iio/common/st_sensors/st_sensors_i2c.c
+++ b/drivers/iio/common/st_sensors/st_sensors_i2c.c
@@ -33,12 +33,11 @@ static int st_sensors_i2c_read_byte(struct st_sensor_transfer_buffer *tb,

         err = i2c_smbus_read_byte_data(to_i2c_client(dev), reg_addr);
         if (err < 0)
-               goto st_accel_i2c_read_byte_error;
+               return err;

         *res_byte = err & 0xff;

-st_accel_i2c_read_byte_error:
-       return err < 0 ? err : 0;
+       return 0;
  }

  static int st_sensors_i2c_read_multiple_byte(
diff --git a/drivers/iio/common/st_sensors/st_sensors_spi.c b/drivers/iio/common/st_sensors/st_sensors_spi.c
index 5b37737..d7a14e0 100644
--- a/drivers/iio/common/st_sensors/st_sensors_spi.c
+++ b/drivers/iio/common/st_sensors/st_sensors_spi.c
@@ -51,16 +51,14 @@ static int st_sensors_spi_read(struct st_sensor_transfer_buffer *tb,
                 tb->tx_buf[0] = reg_addr | ST_SENSORS_SPI_READ;

         err = spi_sync_transfer(to_spi_device(dev), xfers, ARRAY_SIZE(xfers));
-       if (err)
-               goto acc_spi_read_error;
+       if (err) {
+               mutex_unlock(&tb->buf_lock);
+               return err;
+       }

         memcpy(data, tb->rx_buf, len);
         mutex_unlock(&tb->buf_lock);
         return len;
-
-acc_spi_read_error:
-       mutex_unlock(&tb->buf_lock);
-       return err;
  }

  static int st_sensors_spi_read_byte(struct st_sensor_transfer_buffer *tb,
diff --git a/drivers/iio/gyro/st_gyro_buffer.c b/drivers/iio/gyro/st_gyro_buffer.c
index d67b17b..9da07ed 100644
--- a/drivers/iio/gyro/st_gyro_buffer.c
+++ b/drivers/iio/gyro/st_gyro_buffer.c
@@ -41,10 +41,8 @@ static int st_gyro_buffer_postenable(struct iio_dev *indio_dev)
         struct st_sensor_data *gdata = iio_priv(indio_dev);

         gdata->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
-       if (gdata->buffer_data == NULL) {
-               err = -ENOMEM;
-               goto allocate_memory_error;
-       }
+       if (gdata->buffer_data == NULL)
+               return -ENOMEM;

         err = st_sensors_set_axis_enable(indio_dev,
                                         (u8)indio_dev->active_scan_mask[0]);
@@ -59,7 +57,6 @@ static int st_gyro_buffer_postenable(struct iio_dev *indio_dev)

  st_gyro_buffer_postenable_error:
         kfree(gdata->buffer_data);
-allocate_memory_error:
         return err;
  }

diff --git a/drivers/iio/gyro/st_gyro_core.c b/drivers/iio/gyro/st_gyro_core.c
index 4b993a5..668e099 100644
--- a/drivers/iio/gyro/st_gyro_core.c
+++ b/drivers/iio/gyro/st_gyro_core.c
@@ -324,7 +324,7 @@ static int st_gyro_read_raw(struct iio_dev *indio_dev,
         case IIO_CHAN_INFO_RAW:
                 err = st_sensors_read_info_raw(indio_dev, ch, val);
                 if (err < 0)
-                       goto read_error;
+                       break;

                 return IIO_VAL_INT;
         case IIO_CHAN_INFO_SCALE:
@@ -338,7 +338,6 @@ static int st_gyro_read_raw(struct iio_dev *indio_dev,
                 return -EINVAL;
         }

-read_error:
         return err;
  }

@@ -357,7 +356,7 @@ static int st_gyro_write_raw(struct iio_dev *indio_dev,
                 mutex_lock(&indio_dev->mlock);
                 err = st_sensors_set_odr(indio_dev, val);
                 mutex_unlock(&indio_dev->mlock);
-               return err;
+               break;
         default:
                 err = -EINVAL;
         }
diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c
index ecd3bd0..ea4006f 100644
--- a/drivers/iio/magnetometer/st_magn_buffer.c
+++ b/drivers/iio/magnetometer/st_magn_buffer.c
@@ -41,21 +41,14 @@ static int st_magn_buffer_postenable(struct iio_dev *indio_dev)
         struct st_sensor_data *mdata = iio_priv(indio_dev);

         mdata->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
-       if (mdata->buffer_data == NULL) {
-               err = -ENOMEM;
-               goto allocate_memory_error;
-       }
+       if (mdata->buffer_data == NULL)
+               return -ENOMEM;

         err = iio_triggered_buffer_postenable(indio_dev);
         if (err < 0)
-               goto st_magn_buffer_postenable_error;
+               kfree(mdata->buffer_data);

         return err;
-
-st_magn_buffer_postenable_error:
-       kfree(mdata->buffer_data);
-allocate_memory_error:
-       return err;
  }

  static int st_magn_buffer_predisable(struct iio_dev *indio_dev)
@@ -64,12 +57,9 @@ static int st_magn_buffer_predisable(struct iio_dev *indio_dev)
         struct st_sensor_data *mdata = iio_priv(indio_dev);

         err = iio_triggered_buffer_predisable(indio_dev);
-       if (err < 0)
-               goto st_magn_buffer_predisable_error;
-
-       err = st_sensors_set_enable(indio_dev, false);
+       if (err >= 0)
+               err = st_sensors_set_enable(indio_dev, false);

-st_magn_buffer_predisable_error:
         kfree(mdata->buffer_data);
         return err;
  }
diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c
index f8dc4b8..abf75c5 100644
--- a/drivers/iio/magnetometer/st_magn_core.c
+++ b/drivers/iio/magnetometer/st_magn_core.c
@@ -497,7 +497,7 @@ static int st_magn_read_raw(struct iio_dev *indio_dev,
         case IIO_CHAN_INFO_RAW:
                 err = st_sensors_read_info_raw(indio_dev, ch, val);
                 if (err < 0)
-                       goto read_error;
+                       break;

                 return IIO_VAL_INT;
         case IIO_CHAN_INFO_SCALE:
@@ -515,7 +515,6 @@ static int st_magn_read_raw(struct iio_dev *indio_dev,
                 return -EINVAL;
         }

-read_error:
         return err;
  }

@@ -534,7 +533,7 @@ static int st_magn_write_raw(struct iio_dev *indio_dev,
                 mutex_lock(&indio_dev->mlock);
                 err = st_sensors_set_odr(indio_dev, val);
                 mutex_unlock(&indio_dev->mlock);
-               return err;
+               break;
         default:
                 err = -EINVAL;
         }
diff --git a/drivers/iio/magnetometer/st_magn_i2c.c b/drivers/iio/magnetometer/st_magn_i2c.c
index 8aa37af..787e5bb 100644
--- a/drivers/iio/magnetometer/st_magn_i2c.c
+++ b/drivers/iio/magnetometer/st_magn_i2c.c
@@ -60,14 +60,10 @@ static int st_magn_i2c_probe(struct i2c_client *client,

         mdata = iio_priv(indio_dev);
         st_sensors_of_i2c_probe(client, st_magn_of_match);
-
         st_sensors_i2c_configure(indio_dev, client, mdata);
-
         err = st_magn_common_probe(indio_dev);
-       if (err < 0)
-               return err;

-       return 0;
+       return (err < 0) ? err : 0;
  }

  static int st_magn_i2c_remove(struct i2c_client *client)
diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c
index 0abca2c..1d78dae 100644
--- a/drivers/iio/magnetometer/st_magn_spi.c
+++ b/drivers/iio/magnetometer/st_magn_spi.c
@@ -29,14 +29,10 @@ static int st_magn_spi_probe(struct spi_device *spi)
                 return -ENOMEM;

         mdata = iio_priv(indio_dev);
-
         st_sensors_spi_configure(indio_dev, spi, mdata);
-
         err = st_magn_common_probe(indio_dev);
-       if (err < 0)
-               return err;

-       return 0;
+       return (err < 0) ? err : 0;
  }

  static int st_magn_spi_remove(struct spi_device *spi)
diff --git a/drivers/iio/pressure/st_pressure_buffer.c b/drivers/iio/pressure/st_pressure_buffer.c
index 2ff53f2..d8a83e7 100644
--- a/drivers/iio/pressure/st_pressure_buffer.c
+++ b/drivers/iio/pressure/st_pressure_buffer.c
@@ -41,21 +41,14 @@ static int st_press_buffer_postenable(struct iio_dev *indio_dev)
         struct st_sensor_data *press_data = iio_priv(indio_dev);

         press_data->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
-       if (press_data->buffer_data == NULL) {
-               err = -ENOMEM;
-               goto allocate_memory_error;
-       }
+       if (press_data->buffer_data == NULL)
+               return -ENOMEM;

         err = iio_triggered_buffer_postenable(indio_dev);
         if (err < 0)
-               goto st_press_buffer_postenable_error;
+               kfree(press_data->buffer_data);

         return err;
-
-st_press_buffer_postenable_error:
-       kfree(press_data->buffer_data);
-allocate_memory_error:
-       return err;
  }

  static int st_press_buffer_predisable(struct iio_dev *indio_dev)
@@ -64,12 +57,9 @@ static int st_press_buffer_predisable(struct iio_dev *indio_dev)
         struct st_sensor_data *press_data = iio_priv(indio_dev);

         err = iio_triggered_buffer_predisable(indio_dev);
-       if (err < 0)
-               goto st_press_buffer_predisable_error;
-
-       err = st_sensors_set_enable(indio_dev, false);
+       if (err >= 0)
+               err = st_sensors_set_enable(indio_dev, false);

-st_press_buffer_predisable_error:
         kfree(press_data->buffer_data);
         return err;
  }
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index eb41d2b..b26b1a8 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -325,10 +325,12 @@ static int st_press_write_raw(struct iio_dev *indio_dev,
                 mutex_lock(&indio_dev->mlock);
                 err = st_sensors_set_odr(indio_dev, val);
                 mutex_unlock(&indio_dev->mlock);
-               return err;
+               break;
         default:
                 return -EINVAL;
         }
+
+       return err;
  }

  static int st_press_read_raw(struct iio_dev *indio_dev,
@@ -342,7 +344,7 @@ static int st_press_read_raw(struct iio_dev *indio_dev,
         case IIO_CHAN_INFO_RAW:
                 err = st_sensors_read_info_raw(indio_dev, ch, val);
                 if (err < 0)
-                       goto read_error;
+                       break;

                 return IIO_VAL_INT;
         case IIO_CHAN_INFO_SCALE:
@@ -356,8 +358,7 @@ static int st_press_read_raw(struct iio_dev *indio_dev,
                         *val2 = press_data->current_fullscale->gain2;
                         break;
                 default:
-                       err = -EINVAL;
-                       goto read_error;
+                       return -EINVAL;
                 }

                 return IIO_VAL_INT_PLUS_NANO;
@@ -368,8 +369,7 @@ static int st_press_read_raw(struct iio_dev *indio_dev,
                         *val2 = 10;
                         break;
                 default:
-                       err = -EINVAL;
-                       goto read_error;
+                       return -EINVAL;
                 }

                 return IIO_VAL_FRACTIONAL;
@@ -380,7 +380,6 @@ static int st_press_read_raw(struct iio_dev *indio_dev,
                 return -EINVAL;
         }

-read_error:
         return err;
  }

diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
index 1ffa6d4..21aac46 100644
--- a/drivers/iio/pressure/st_pressure_spi.c
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -29,14 +29,10 @@ static int st_press_spi_probe(struct spi_device *spi)
                 return -ENOMEM;

         press_data = iio_priv(indio_dev);
-
         st_sensors_spi_configure(indio_dev, spi, press_data);
-
         err = st_press_common_probe(indio_dev);
-       if (err < 0)
-               return err;

-       return 0;
+       return (err < 0) ? err : 0;
  }

  static int st_press_spi_remove(struct spi_device *spi)
--
1.9.1


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