Re: [PATCH]iio get rid of unneccessary error_ret

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On 16/02/14 11:53, Hartmut Knaack wrote:
Get rid of obsolete uses of goto error_ret and some empty lines.

Signed-off-by: Hartmut Knaack <knaack.h@xxxxxx>
Nice little cleanup of what is mostly my old bad habbits back
when I was younger.

Thanks for doing this,

Applied to the togreg branch of iio.git.  Pushed out as testing initially.

Jonathan
---
diff --git a/drivers/iio/buffer_cb.c b/drivers/iio/buffer_cb.c
index 2d9c6f8..eb46e72 100644
--- a/drivers/iio/buffer_cb.c
+++ b/drivers/iio/buffer_cb.c
@@ -46,10 +46,8 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
  	struct iio_channel *chan;

  	cb_buff = kzalloc(sizeof(*cb_buff), GFP_KERNEL);
-	if (cb_buff == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
+	if (cb_buff == NULL)
+		return ERR_PTR(-ENOMEM);

  	iio_buffer_init(&cb_buff->buffer);

@@ -91,7 +89,6 @@ error_release_channels:
  	iio_channel_release_all(cb_buff->channels);
  error_free_cb_buff:
  	kfree(cb_buff);
-error_ret:
  	return ERR_PTR(ret);
  }
  EXPORT_SYMBOL_GPL(iio_channel_get_all_cb);
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index c67d83b..e108f2a 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -264,7 +264,7 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
  				     &indio_dev->dev,
  				     &buffer->scan_el_dev_attr_list);
  	if (ret)
-		goto error_ret;
+		return ret;
  	attrcount++;
  	ret = __iio_add_chan_devattr("type",
  				     chan,
@@ -275,7 +275,7 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
  				     &indio_dev->dev,
  				     &buffer->scan_el_dev_attr_list);
  	if (ret)
-		goto error_ret;
+		return ret;
  	attrcount++;
  	if (chan->type != IIO_TIMESTAMP)
  		ret = __iio_add_chan_devattr("en",
@@ -296,10 +296,9 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
  					     &indio_dev->dev,
  					     &buffer->scan_el_dev_attr_list);
  	if (ret)
-		goto error_ret;
+		return ret;
  	attrcount++;
  	ret = attrcount;
-error_ret:
  	return ret;
  }

@@ -553,13 +552,13 @@ static int __iio_update_buffers(struct iio_dev *indio_dev,
  		if (indio_dev->setup_ops->predisable) {
  			ret = indio_dev->setup_ops->predisable(indio_dev);
  			if (ret)
-				goto error_ret;
+				return ret;
  		}
  		indio_dev->currentmode = INDIO_DIRECT_MODE;
  		if (indio_dev->setup_ops->postdisable) {
  			ret = indio_dev->setup_ops->postdisable(indio_dev);
  			if (ret)
-				goto error_ret;
+				return ret;
  		}
  	}
  	/* Keep a copy of current setup to allow roll back */
@@ -613,7 +612,7 @@ static int __iio_update_buffers(struct iio_dev *indio_dev,
  			else {
  				kfree(compound_mask);
  				ret = -EINVAL;
-				goto error_ret;
+				return ret;
  			}
  		}
  	} else {
@@ -696,13 +695,10 @@ error_run_postdisable:
  	if (indio_dev->setup_ops->postdisable)
  		indio_dev->setup_ops->postdisable(indio_dev);
  error_remove_inserted:
-
  	if (insert_buffer)
  		iio_buffer_deactivate(insert_buffer);
  	indio_dev->active_scan_mask = old_mask;
  	kfree(compound_mask);
-error_ret:
-
  	return ret;
  }

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index acc911a..a85b660 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -692,10 +692,8 @@ int __iio_add_chan_devattr(const char *postfix,
  	struct iio_dev_attr *iio_attr, *t;

  	iio_attr = kzalloc(sizeof(*iio_attr), GFP_KERNEL);
-	if (iio_attr == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
+	if (iio_attr == NULL)
+		return -ENOMEM;
  	ret = __iio_device_attr_init(&iio_attr->dev_attr,
  				     postfix, chan,
  				     readfunc, writefunc, shared_by);
@@ -720,7 +718,6 @@ error_device_attr_deinit:
  	__iio_device_attr_deinit(&iio_attr->dev_attr);
  error_iio_dev_attr_free:
  	kfree(iio_attr);
-error_ret:
  	return ret;
  }

@@ -1134,7 +1131,7 @@ int iio_device_register(struct iio_dev *indio_dev)
  	if (ret) {
  		dev_err(indio_dev->dev.parent,
  			"Failed to register debugfs interfaces\n");
-		goto error_ret;
+		return ret;
  	}
  	ret = iio_device_register_sysfs(indio_dev);
  	if (ret) {
@@ -1175,7 +1172,6 @@ error_free_sysfs:
  	iio_device_unregister_sysfs(indio_dev);
  error_unreg_debugfs:
  	iio_device_unregister_debugfs(indio_dev);
-error_ret:
  	return ret;
  }
  EXPORT_SYMBOL(iio_device_register);
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index c9c1419..2e6f8e0 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -366,32 +366,31 @@ static int iio_device_add_event_sysfs(struct iio_dev *indio_dev,
  		ret = iio_device_add_event(indio_dev, chan, i, type, dir,
  			IIO_SEPARATE, &chan->event_spec[i].mask_separate);
  		if (ret < 0)
-			goto error_ret;
+			return ret;
  		attrcount += ret;

  		ret = iio_device_add_event(indio_dev, chan, i, type, dir,
  			IIO_SHARED_BY_TYPE,
  			&chan->event_spec[i].mask_shared_by_type);
  		if (ret < 0)
-			goto error_ret;
+			return ret;
  		attrcount += ret;

  		ret = iio_device_add_event(indio_dev, chan, i, type, dir,
  			IIO_SHARED_BY_DIR,
  			&chan->event_spec[i].mask_shared_by_dir);
  		if (ret < 0)
-			goto error_ret;
+			return ret;
  		attrcount += ret;

  		ret = iio_device_add_event(indio_dev, chan, i, type, dir,
  			IIO_SHARED_BY_ALL,
  			&chan->event_spec[i].mask_shared_by_all);
  		if (ret < 0)
-			goto error_ret;
+			return ret;
  		attrcount += ret;
  	}
  	ret = attrcount;
-error_ret:
  	return ret;
  }

@@ -440,10 +439,8 @@ int iio_device_register_eventset(struct iio_dev *indio_dev)

  	indio_dev->event_interface =
  		kzalloc(sizeof(struct iio_event_interface), GFP_KERNEL);
-	if (indio_dev->event_interface == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
+	if (indio_dev->event_interface == NULL)
+		return -ENOMEM;

  	INIT_LIST_HEAD(&indio_dev->event_interface->dev_attr_list);

@@ -489,8 +486,6 @@ int iio_device_register_eventset(struct iio_dev *indio_dev)
  error_free_setup_event_lines:
  	iio_free_chan_devattr_list(&indio_dev->event_interface->dev_attr_list);
  	kfree(indio_dev->event_interface);
-error_ret:
-
  	return ret;
  }

diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 766fab2..3383b02 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -62,10 +62,9 @@ int iio_trigger_register(struct iio_trigger *trig_info)
  	int ret;

  	trig_info->id = ida_simple_get(&iio_trigger_ida, 0, 0, GFP_KERNEL);
-	if (trig_info->id < 0) {
-		ret = trig_info->id;
-		goto error_ret;
-	}
+	if (trig_info->id < 0)
+		return trig_info->id;
+
  	/* Set the name used for the sysfs directory etc */
  	dev_set_name(&trig_info->dev, "trigger%ld",
  		     (unsigned long) trig_info->id);
@@ -83,7 +82,6 @@ int iio_trigger_register(struct iio_trigger *trig_info)

  error_unregister_id:
  	ida_simple_remove(&iio_trigger_ida, trig_info->id);
-error_ret:
  	return ret;
  }
  EXPORT_SYMBOL(iio_trigger_register);
@@ -234,13 +232,12 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
  	if (trig->ops && trig->ops->set_trigger_state && no_other_users) {
  		ret = trig->ops->set_trigger_state(trig, false);
  		if (ret)
-			goto error_ret;
+			return ret;
  	}
  	iio_trigger_put_irq(trig, pf->irq);
  	free_irq(pf->irq, pf);
  	module_put(pf->indio_dev->info->driver_module);

-error_ret:
  	return ret;
  }

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